/* ==========================================================================
   Ryuken 龙研贸易 — 官网设计系统
   科技蓝 + 简约商务风
   ========================================================================== */

:root{
  /* 品牌色 */
  --blue-900:#062043;
  --blue-800:#0A2E5C;
  --blue-700:#003D75;
  --blue-600:#0056A6;
  --blue-500:#1E76D0;
  --blue-400:#4EA8F5;
  --blue-200:#BBD9F5;
  --blue-050:#EEF5FE;
  --cyan:#00C8FF;
  --cyan-soft:rgba(0,200,255,.16);

  /* 中性色 */
  --ink:#16202E;
  --gray-700:#3D4A5C;
  --gray-500:#6B7A8D;
  --gray-400:#93A1B2;
  --gray-300:#CBD6E3;
  --gray-200:#E3EAF3;
  --gray-100:#F1F6FC;
  --bg:#F6F9FD;
  --white:#fff;

  /* 功能色 */
  --red:#D9363E;
  --green:#12A45B;

  /* 圆角 / 阴影 */
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --sh-1:0 2px 10px rgba(16,42,80,.06);
  --sh-2:0 10px 30px -12px rgba(16,42,80,.18);
  --sh-3:0 24px 60px -20px rgba(6,32,67,.35);
  --sh-blue:0 16px 40px -14px rgba(0,86,166,.45);

  /* 字体 */
  --font-en:'Montserrat','Inter','Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-cn:'Microsoft YaHei','PingFang SC','Hiragino Sans GB','Source Han Sans SC','Noto Sans SC',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Consolas,monospace;

  --nav-h:76px;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn),var(--font-en);
  color:var(--ink);
  background:var(--white);
  font-size:15px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em}
p{margin:0}
::selection{background:var(--blue-600);color:#fff}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--gray-100)}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:20px;border:2px solid var(--gray-100)}
::-webkit-scrollbar-thumb:hover{background:var(--blue-400)}

/* ---------- 布局工具 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--gray{background:var(--bg)}
.section--dark{background:var(--blue-900);color:#fff}
.center{text-align:center}
.mt-0{margin-top:0}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-en);
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--blue-600);margin-bottom:16px;
}
.eyebrow::before{content:'';width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--blue-600));border-radius:2px}
.eyebrow--light{color:var(--blue-400)}
.eyebrow--light::before{background:linear-gradient(90deg,var(--cyan),var(--blue-400))}
.eyebrow--center{justify-content:center}

.section-head{max-width:720px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto}
.section-title{font-size:clamp(26px,3.2vw,38px);color:var(--blue-900)}
.section-title .hl{color:var(--blue-600)}
.section-desc{margin-top:16px;color:var(--gray-500);font-size:15.5px}
.section--dark .section-title{color:#fff}
.section--dark .section-desc{color:#A8BEDB}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:0 26px;height:48px;border-radius:999px;border:1.5px solid transparent;
  font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s cubic-bezier(.2,.8,.3,1),box-shadow .3s,background .3s,color .3s,border-color .3s;
  position:relative;overflow:hidden;
}
.btn svg{width:17px;height:17px;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:#fff;box-shadow:var(--sh-blue)}
.btn--primary:hover{box-shadow:0 20px 44px -12px rgba(0,86,166,.6)}
.btn--cyan{background:linear-gradient(135deg,var(--cyan),#3C9BFF);color:#04203F;box-shadow:0 14px 34px -12px rgba(0,200,255,.6)}
.btn--ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.28);backdrop-filter:blur(6px)}
.btn--ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5)}
.btn--outline{background:#fff;color:var(--blue-600);border-color:var(--gray-200);box-shadow:var(--sh-1)}
.btn--outline:hover{border-color:var(--blue-400);color:var(--blue-700)}
.btn--sm{height:40px;padding:0 20px;font-size:13.5px}
.btn--block{width:100%}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--blue-900);color:#9DB6D6;font-size:12.5px;font-family:var(--font-en);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:38px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.topbar-item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.topbar-item svg{width:13px;height:13px;opacity:.75}
.topbar a:hover{color:var(--cyan)}
.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(18,164,91,.2)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.9);backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid var(--gray-200);transition:box-shadow .3s,background .3s}
.site-header.scrolled{box-shadow:0 6px 26px -14px rgba(16,42,80,.28);background:rgba(255,255,255,.96)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:44px;height:44px;border-radius:13px;flex:none;
  background:linear-gradient(140deg,var(--blue-700),var(--blue-500) 55%,var(--cyan));
  display:grid;place-items:center;color:#fff;box-shadow:var(--sh-blue);position:relative;overflow:hidden;
}
.brand-mark::after{content:'';position:absolute;inset:0;background:linear-gradient(140deg,rgba(255,255,255,.35),transparent 55%)}
.brand-mark svg{width:24px;height:24px;position:relative;z-index:1}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-en{font-family:var(--font-en);font-weight:800;font-size:19px;letter-spacing:.02em;color:var(--blue-900)}
.brand-cn{font-size:11.5px;color:var(--gray-500);letter-spacing:.22em;font-weight:500}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--gray-700);
  transition:color .22s,background .22s;
}
.nav-links a:hover{color:var(--blue-600);background:var(--blue-050)}
.nav-links a.active{color:var(--blue-600);font-weight:600}
.nav-links a.active::after{content:'';position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--blue-600))}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}

/* 语言切换 */
.lang-switch{display:flex;align-items:center;background:var(--gray-100);border-radius:999px;padding:3px;position:relative}
.lang-switch button{
  border:0;background:transparent;cursor:pointer;padding:6px 13px;border-radius:999px;
  font-size:12.5px;font-weight:700;font-family:var(--font-en);letter-spacing:.06em;color:var(--gray-500);
  transition:color .25s,background .25s,box-shadow .25s;
}
.lang-switch button.on{background:#fff;color:var(--blue-600);box-shadow:var(--sh-1)}

/* 移动端菜单按钮 */
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--gray-200);background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--blue-900);border-radius:2px;position:relative;transition:.3s}
.nav-toggle span::before,.nav-toggle span::after{content:'';position:absolute;left:0;width:19px;height:2px;background:var(--blue-900);border-radius:2px;transition:.3s}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span::after{transform:translateY(-6px) rotate(-45deg)}

.mobile-menu{
  display:none;overflow:hidden;max-height:0;transition:max-height .4s cubic-bezier(.4,0,.2,1);
  background:#fff;border-bottom:1px solid var(--gray-200);
}
.mobile-menu.open{max-height:560px}
.mobile-menu .inner{padding:14px 24px 26px;display:flex;flex-direction:column;gap:2px}
.mobile-menu a{padding:13px 14px;border-radius:12px;font-weight:500;color:var(--gray-700)}
.mobile-menu a.active,.mobile-menu a:hover{background:var(--blue-050);color:var(--blue-600)}
.mobile-menu .btn{margin-top:14px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#04203F 0%,#062B54 42%,#0A3D74 100%);color:#fff;padding:96px 0 0}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-bg .glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.hero-bg .g1{width:620px;height:620px;background:radial-gradient(circle,rgba(0,150,255,.55),transparent 68%);top:-220px;right:-120px}
.hero-bg .g2{width:520px;height:520px;background:radial-gradient(circle,rgba(0,200,255,.32),transparent 68%);bottom:-200px;left:-140px}
.hero-grid{position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 25%,transparent 78%);
}
.hero-circuit{position:absolute;inset:0;width:100%;height:100%;opacity:.5}
.hero .container{position:relative;z-index:2}
.hero-grid-2{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding-bottom:76px}

.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 16px 7px 10px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(8px);
  font-size:12.5px;color:#CDE4FF;margin-bottom:26px;font-family:var(--font-en);font-weight:600;letter-spacing:.04em;
}
.hero-badge .pill{background:linear-gradient(135deg,var(--cyan),#3C9BFF);color:#03203E;border-radius:999px;padding:2px 10px;font-size:11px;font-weight:800}
.hero-title{font-size:clamp(32px,4.6vw,58px);line-height:1.16;letter-spacing:-.02em;font-weight:800}
.hero-title .grad{background:linear-gradient(100deg,#5FC8FF,#00C8FF 45%,#7BE0FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:22px;font-size:16.5px;color:#A9C5E6;max-width:560px;line-height:1.85}
.hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}

.hero-stats{display:flex;gap:44px;margin-top:52px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.1);padding-top:30px}
.hero-stat b{display:block;font-family:var(--font-en);font-size:32px;font-weight:800;color:#fff;letter-spacing:-.02em}
.hero-stat b i{font-style:normal;color:var(--cyan);font-size:22px;margin-left:2px}
.hero-stat > span{font-size:13px;color:#8FADD1}
/* 计数器所在的 span 必须保持行内，避免被上面的标签样式误伤（换行/缩放） */
.hero-stat b span,.stat-box b span{display:inline;font-size:inherit;color:inherit}

/* Hero 视觉卡：高度需容纳 chip-main 全部行（内容约 363px + 上下 inset），否则行会溢出卡片底边 */
.hero-visual{position:relative;height:510px}
.chip-card{
  position:absolute;border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);backdrop-filter:blur(14px);box-shadow:var(--sh-3);
}
.chip-main{
  inset:24px 0 106px 40px;padding:26px;display:flex;flex-direction:column;justify-content:space-between;
  animation:floatY 7s ease-in-out infinite;
}
.chip-main .cc-head{display:flex;align-items:center;justify-content:space-between}
.chip-main .cc-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);text-transform:uppercase}
.chip-main .cc-name{font-family:var(--font-en);font-weight:800;font-size:22px;margin-top:6px}
.chip-main .cc-part{font-family:var(--font-mono);font-size:12px;color:#9FBCDC;margin-top:4px}
.chip-rows{display:flex;flex-direction:column;gap:11px;margin-top:20px}
.chip-row{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:#C3D8F0;padding:9px 13px;border-radius:11px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.07)}
.chip-row .k{color:#8FADD1;font-family:var(--font-en)}
.chip-row .v{font-weight:600;color:#fff}
.chip-row .v.ok{color:#4CE38B}
.chip-mini{
  width:190px;padding:15px 17px;right:-6px;bottom:10px;
  /* 与 chip-main 同周期同相位，两张卡同步浮动，避免位移错开造成重叠 */
  animation:floatY 7s ease-in-out infinite;
}
.chip-mini .t{font-size:11.5px;color:#8FADD1;font-family:var(--font-en);letter-spacing:.05em}
.chip-mini .n{font-family:var(--font-en);font-weight:800;font-size:24px;margin-top:4px;color:#fff}
.chip-mini .bar{height:5px;border-radius:5px;background:rgba(255,255,255,.14);margin-top:11px;overflow:hidden}
.chip-mini .bar i{display:block;height:100%;width:82%;border-radius:5px;background:linear-gradient(90deg,var(--cyan),var(--blue-400));animation:grow 2.6s ease-out infinite alternate}

@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes grow{from{width:38%}to{width:88%}}
@keyframes dash{to{stroke-dashoffset:-1000}}
@keyframes pulse{0%,100%{opacity:.35;r:3}50%{opacity:1;r:4.4}}
@keyframes blip{0%,100%{opacity:.22}50%{opacity:1}}

.hero-circuit .flow{animation:dash 9s linear infinite}
.hero-circuit .blip{animation:blip 3.2s ease-in-out infinite}
.hero-circuit .b2{animation-delay:.5s}
.hero-circuit .b3{animation-delay:1s}
.hero-circuit .b4{animation-delay:1.5s}
.hero-circuit .b5{animation-delay:2s}

/* Hero 搜索 */
.hero-searchbar{
  position:relative;z-index:3;transform:translateY(46px);
  max-width:960px;margin:0 auto;background:#fff;border-radius:var(--r-xl);
  box-shadow:0 30px 70px -28px rgba(2,20,44,.55);padding:12px;display:grid;
  grid-template-columns:1fr 190px auto;gap:10px;align-items:center;border:1px solid rgba(255,255,255,.7);
}
.hs-field{position:relative;display:flex;align-items:center;height:52px;border-radius:16px;padding:0 16px;background:var(--gray-100)}
.hs-field svg{width:18px;height:18px;color:var(--gray-400);flex:none;margin-right:11px}
.hs-field input{flex:1;border:0;background:transparent;outline:none;font-size:15px;height:100%;min-width:0}
.hs-field input::placeholder{color:var(--gray-400)}
.hs-field select{border:0;background:transparent;outline:none;font-size:14.5px;height:100%;width:100%;cursor:pointer;color:var(--gray-700);font-weight:500}
.hero-searchbar .btn{height:52px;padding:0 30px}
.hero-search-tags{display:flex;align-items:center;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:70px;padding-bottom:62px;color:#8FADD1;font-size:12.5px}
.hero-search-tags a{padding:5px 13px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:#C3D8F0;transition:.25s}
.hero-search-tags a:hover{background:var(--cyan);color:#04203F;border-color:transparent}

/* ---------- 品牌 Logo 墙 ---------- */
.brand-strip{padding:34px 0;border-bottom:1px solid var(--gray-200);background:#fff}
.brand-strip .label{text-align:center;font-family:var(--font-en);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--gray-400);font-weight:700;margin-bottom:22px}
.logo-wall{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.logo-wall .lw{
  font-family:var(--font-en);font-weight:800;font-size:19px;letter-spacing:.02em;color:var(--gray-400);
  opacity:.85;transition:.3s;filter:grayscale(1);white-space:nowrap;
}
.logo-wall .lw:hover{color:var(--blue-600);filter:none;transform:translateY(-2px);opacity:1}

/* ---------- 分类卡片 ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.cat-card{
  position:relative;background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);
  padding:30px 26px 26px;transition:transform .35s cubic-bezier(.2,.8,.3,1),box-shadow .35s,border-color .35s;
  overflow:hidden;
}
.cat-card::before{content:'';position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--cyan),var(--blue-600));transition:width .45s cubic-bezier(.4,0,.2,1)}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:var(--blue-200)}
.cat-card:hover::before{width:100%}
.cat-ico{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(140deg,var(--blue-050),#fff);border:1px solid var(--blue-200);color:var(--blue-600);
  transition:.35s;
}
.cat-ico svg{width:26px;height:26px}
.cat-card:hover .cat-ico{background:linear-gradient(140deg,var(--blue-600),var(--blue-500));color:#fff;border-color:transparent;box-shadow:var(--sh-blue)}
.cat-card h3{font-size:17px;color:var(--blue-900)}
.cat-card .en{font-family:var(--font-en);font-size:12px;color:var(--gray-400);font-weight:600;letter-spacing:.05em;margin-top:3px}
.cat-card p{margin-top:12px;font-size:13.5px;color:var(--gray-500);line-height:1.7}
.slogan-card .slogan-main{margin-top:14px;font-size:15.5px;font-weight:700;color:var(--blue-900);line-height:1.65}
.slogan-card .en{margin-top:8px;line-height:1.6}
.cat-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:13px;font-weight:600;color:var(--blue-600)}
.cat-card .more svg{width:14px;height:14px;transition:transform .3s}
.cat-card:hover .more svg{transform:translateX(4px)}

/* ---------- 优势 ---------- */
.adv-card{display:flex;gap:18px;padding:26px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--gray-200);transition:.35s}
.adv-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--blue-200)}
.adv-ico{width:48px;height:48px;border-radius:14px;flex:none;display:grid;place-items:center;background:linear-gradient(140deg,var(--blue-600),var(--blue-400));color:#fff;box-shadow:var(--sh-blue)}
.adv-ico svg{width:23px;height:23px}
.adv-card h3{font-size:16px;color:var(--blue-900)}
.adv-card p{margin-top:8px;font-size:13.5px;color:var(--gray-500);line-height:1.72}

/* ---------- 产品卡 ---------- */
.prod-card{
  background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .35s cubic-bezier(.2,.8,.3,1),box-shadow .35s,border-color .35s;display:flex;flex-direction:column;
}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:var(--blue-200)}
.prod-thumb{
  height:150px;position:relative;display:grid;place-items:center;
  background:linear-gradient(140deg,#F4F8FE,#E8F1FC);border-bottom:1px solid var(--gray-200);overflow:hidden;
}
.prod-thumb svg{width:74px;height:74px;color:var(--blue-600);opacity:.9;transition:.4s}
.prod-card:hover .prod-thumb svg{transform:scale(1.08) rotate(-3deg)}
.prod-thumb .grid-bg{position:absolute;inset:0;opacity:.55;background-image:linear-gradient(rgba(0,86,166,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(0,86,166,.07) 1px,transparent 1px);background-size:22px 22px}
.prod-badge{position:absolute;top:12px;left:12px;padding:4px 11px;border-radius:999px;font-size:11px;font-weight:700;font-family:var(--font-en);letter-spacing:.04em}
.prod-badge--stock{background:rgba(18,164,91,.12);color:var(--green)}
.prod-badge--hot{background:rgba(217,54,62,.1);color:var(--red)}
.prod-badge--new{background:rgba(0,86,166,.1);color:var(--blue-600)}
.prod-body{padding:20px;display:flex;flex-direction:column;flex:1}
.prod-brand{font-family:var(--font-en);font-size:11.5px;font-weight:800;letter-spacing:.1em;color:var(--blue-500);text-transform:uppercase}
.prod-name{font-size:16px;font-weight:700;color:var(--blue-900);margin-top:6px;line-height:1.4}
.prod-part{font-family:var(--font-mono);font-size:12.5px;color:var(--gray-500);margin-top:5px;letter-spacing:.02em}
.prod-specs{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.prod-specs span{font-size:11.5px;padding:4px 10px;border-radius:7px;background:var(--gray-100);color:var(--gray-700);font-family:var(--font-mono)}
.prod-foot{margin-top:auto;padding-top:17px;display:flex;align-items:center;justify-content:space-between;border-top:1px dashed var(--gray-200);gap:10px}
.prod-stock{font-size:12px;color:var(--gray-500)}
.prod-stock b{color:var(--green);font-family:var(--font-en);font-size:14px}

/* ---------- 询价 CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(130deg,#04203F,#083065 48%,#0A4080);color:#fff;padding:56px 56px;
  display:grid;grid-template-columns:1fr auto;gap:38px;align-items:center;box-shadow:var(--sh-3);
}
.cta-band::after{content:'';position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(0,200,255,.35),transparent 70%);filter:blur(10px)}
.cta-band h2{font-size:clamp(23px,2.8vw,32px);position:relative}
.cta-band p{margin-top:13px;color:#A9C5E6;font-size:15px;position:relative;max-width:620px}
.cta-band .actions{display:flex;gap:14px;position:relative;flex-wrap:wrap}

/* ---------- 内页头部 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;padding:76px 0 68px;
  background:linear-gradient(150deg,#04203F,#062B54 55%,#0A3D74);
}
.page-hero .hero-grid{opacity:.35}
.page-hero .glow{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4}
.page-hero .g1{width:420px;height:420px;background:radial-gradient(circle,rgba(0,150,255,.5),transparent 68%);right:-80px;top:-160px}
.page-hero .g2{width:340px;height:340px;background:radial-gradient(circle,rgba(0,200,255,.3),transparent 68%);left:-60px;bottom:-180px}
.rfq-grid{display:grid;grid-template-columns:1.4fr .62fr;gap:34px;align-items:start}
@media (max-width:1080px){.rfq-grid{grid-template-columns:1fr}}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:9px;font-size:12.5px;color:#8FADD1;font-family:var(--font-en);margin-bottom:16px;flex-wrap:wrap}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{opacity:.5}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);letter-spacing:-.02em}
.page-hero .lead{margin-top:15px;color:#A9C5E6;font-size:16px;max-width:700px}

/* ---------- 筛选 / 搜索工具栏 ---------- */
.toolbar{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);padding:18px;box-shadow:var(--sh-1);display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:34px}
.tb-search{flex:1;min-width:240px;display:flex;align-items:center;height:48px;border-radius:14px;background:var(--gray-100);padding:0 16px}
.tb-search svg{width:18px;height:18px;color:var(--gray-400);margin-right:10px;flex:none}
.tb-search input{flex:1;border:0;background:transparent;outline:none;font-size:14.5px;height:100%;min-width:0}
.chips{display:flex;gap:9px;flex-wrap:wrap}
.chip{padding:9px 17px;border-radius:999px;border:1.5px solid var(--gray-200);background:#fff;font-size:13.5px;font-weight:500;color:var(--gray-700);cursor:pointer;transition:.25s;white-space:nowrap}
.chip:hover{border-color:var(--blue-400);color:var(--blue-600)}
.chip.on{background:var(--blue-600);border-color:var(--blue-600);color:#fff;box-shadow:var(--sh-blue)}
.result-count{font-size:13.5px;color:var(--gray-500);margin-bottom:20px}
.result-count b{color:var(--blue-600);font-family:var(--font-en)}
.empty{padding:70px 20px;text-align:center;color:var(--gray-400);border:1px dashed var(--gray-300);border-radius:var(--r-lg);background:var(--bg)}

/* ---------- 品牌卡 ---------- */
.brand-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);padding:28px 26px;transition:.35s}
.brand-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:var(--blue-200)}
.brand-logo{height:52px;display:flex;align-items:center;gap:12px;margin-bottom:18px}
.brand-logo .bl-mark{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-family:var(--font-en);font-weight:800;font-size:16px;color:#fff;background:linear-gradient(140deg,var(--blue-700),var(--blue-500));letter-spacing:-.02em;flex:none}
.brand-logo .bl-name{font-family:var(--font-en);font-weight:800;font-size:19px;color:var(--blue-900);line-height:1.15}
.brand-logo .bl-sub{font-size:12px;color:var(--gray-400)}
.brand-card h3{font-size:15.5px;color:var(--blue-900)}
.brand-card p{margin-top:9px;font-size:13.5px;color:var(--gray-500);line-height:1.72}
.brand-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.brand-tags span{font-size:11.5px;padding:4px 10px;border-radius:7px;background:var(--blue-050);color:var(--blue-600);font-weight:500}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-xl);padding:38px;box-shadow:var(--sh-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--gray-700)}
.field label .req{color:var(--red);margin-left:3px}
.field input,.field select,.field textarea{
  border:1.5px solid var(--gray-200);border-radius:12px;padding:13px 15px;font-size:14.5px;background:#fff;
  outline:none;transition:border-color .25s,box-shadow .25s,background .25s;width:100%;font-family:inherit;
}
.field textarea{resize:vertical;min-height:118px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(30,118,208,.12)}
.field input::placeholder,.field textarea::placeholder{color:var(--gray-400)}
.field .hint{font-size:12px;color:var(--gray-400)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--red);background:#FFF8F8}
.form-note{margin-top:22px;font-size:12.5px;color:var(--gray-400);display:flex;gap:9px;align-items:flex-start}
.form-note svg{width:15px;height:15px;flex:none;margin-top:3px;color:var(--blue-400)}

.upload-zone{
  border:1.5px dashed var(--gray-300);border-radius:var(--r-md);padding:30px;text-align:center;background:var(--bg);
  cursor:pointer;transition:.3s;
}
.upload-zone:hover,.upload-zone.drag{border-color:var(--blue-500);background:var(--blue-050)}
.upload-zone svg{width:34px;height:34px;color:var(--blue-500);margin-bottom:12px}
.upload-zone .uz-t{font-size:14.5px;font-weight:600;color:var(--blue-900)}
.upload-zone .uz-s{font-size:12.5px;color:var(--gray-400);margin-top:6px}
.file-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.file-item{display:flex;align-items:center;gap:11px;padding:11px 15px;background:#fff;border:1px solid var(--gray-200);border-radius:11px;font-size:13px}
.file-item svg{width:16px;height:16px;color:var(--green);flex:none}
.file-item .sz{margin-left:auto;color:var(--gray-400);font-size:12px;font-family:var(--font-en)}
.file-item .rm{cursor:pointer;color:var(--gray-400);border:0;background:none;font-size:17px;line-height:1}
.file-item .rm:hover{color:var(--red)}

.form-success{
  display:none;padding:16px 20px;border-radius:14px;background:rgba(18,164,91,.08);border:1px solid rgba(18,164,91,.28);
  color:#0E7A44;font-size:14px;align-items:center;gap:11px;margin-bottom:26px;
}
.form-success.show{display:flex}
.form-success svg{width:19px;height:19px;flex:none}

/* ---------- 信息卡 / 联系 ---------- */
.info-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);padding:28px;transition:.35s;height:100%}
.info-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--blue-200)}
.info-ico{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(140deg,var(--blue-050),#fff);border:1px solid var(--blue-200);color:var(--blue-600);margin-bottom:18px}
.info-ico svg{width:24px;height:24px}
.info-card h3{font-size:15.5px;color:var(--blue-900);margin-bottom:9px}
.info-card p,.info-card a{font-size:14px;color:var(--gray-700);line-height:1.8;word-break:break-word}
.info-card a:hover{color:var(--blue-600)}
.info-card .en-sub{font-family:var(--font-en);font-size:12.5px;color:var(--gray-400);margin-top:6px}

.map-box{border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--gray-200);box-shadow:var(--sh-1);background:linear-gradient(140deg,#EAF2FC,#DCE9F9);height:340px;position:relative;display:grid;place-items:center}
.map-box .grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(0,86,166,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(0,86,166,.09) 1px,transparent 1px);background-size:38px 38px}
.map-pin{position:relative;z-index:2;text-align:center}
.map-pin .pin{width:54px;height:54px;border-radius:50% 50% 50% 4px;transform:rotate(45deg);background:linear-gradient(140deg,var(--blue-600),var(--blue-400));margin:0 auto 16px;box-shadow:var(--sh-blue);display:grid;place-items:center}
.map-pin .pin svg{transform:rotate(-45deg);width:24px;height:24px;color:#fff}
.map-pin .mp-t{font-weight:700;color:var(--blue-900)}
.map-pin .mp-s{font-size:13px;color:var(--gray-500);margin-top:6px;max-width:420px}

/* ---------- 关于页 ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.about-copy p{color:var(--gray-700);font-size:15.5px;line-height:1.95}
.about-copy p+p{margin-top:18px}
.kv-list{margin-top:28px;display:grid;gap:1px;background:var(--gray-200);border:1px solid var(--gray-200);border-radius:var(--r-md);overflow:hidden}
.kv{display:grid;grid-template-columns:170px 1fr;background:#fff;padding:14px 18px;font-size:14px}
.kv .k{color:var(--gray-500)}
.kv .v{color:var(--blue-900);font-weight:600;word-break:break-word}
.kv .v.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.02em}

.about-visual{position:relative}
.stat-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat-box{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);padding:26px;position:relative;overflow:hidden;transition:.35s}
.stat-box:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--blue-200)}
.stat-box::before{content:'';position:absolute;right:-26px;top:-26px;width:86px;height:86px;border-radius:50%;background:var(--blue-050)}
.stat-box b{position:relative;font-family:var(--font-en);font-size:32px;font-weight:800;color:var(--blue-600);display:block;letter-spacing:-.02em}
.stat-box > span{position:relative;font-size:13.5px;color:var(--gray-500);display:block;margin-top:6px}

.cred-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);padding:26px;display:flex;gap:18px;transition:.35s}
.cred-card:hover{box-shadow:var(--sh-2);border-color:var(--blue-200);transform:translateY(-4px)}
.cred-ico{width:52px;height:52px;border-radius:15px;flex:none;display:grid;place-items:center;background:linear-gradient(140deg,var(--blue-600),var(--blue-400));color:#fff;box-shadow:var(--sh-blue)}
.cred-ico svg{width:25px;height:25px}
.cred-card h3{font-size:15px;color:var(--blue-900)}
.cred-card .cv{font-family:var(--font-mono);font-size:14px;color:var(--blue-600);font-weight:600;margin-top:8px;word-break:break-all}
.cred-card p{margin-top:8px;font-size:13px;color:var(--gray-500);line-height:1.7}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:'';position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--cyan),var(--blue-600),var(--gray-200))}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:'';position:absolute;left:-33px;top:5px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--blue-600);box-shadow:0 0 0 4px rgba(0,86,166,.1)}
.tl-item .tl-step{font-family:var(--font-en);font-size:11.5px;font-weight:800;letter-spacing:.14em;color:var(--blue-500);text-transform:uppercase}
.tl-item h3{font-size:16px;color:var(--blue-900);margin-top:6px}
.tl-item p{margin-top:7px;font-size:13.5px;color:var(--gray-500);line-height:1.75}

/* ---------- 新闻 ---------- */
.news-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--r-lg);overflow:hidden;transition:.35s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:var(--blue-200)}
.news-cover{height:160px;position:relative;overflow:hidden;background:linear-gradient(140deg,#E8F1FC,#D6E6F8)}
.news-cover .nc-ico{position:absolute;inset:0;display:grid;place-items:center;color:var(--blue-600);opacity:.55}
.news-cover .nc-ico svg{width:60px;height:60px}
.news-cover .grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(0,86,166,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(0,86,166,.08) 1px,transparent 1px);background-size:24px 24px}
.news-cat{position:absolute;top:12px;left:12px;z-index:2;padding:5px 12px;border-radius:999px;font-size:11.5px;font-weight:700;background:rgba(255,255,255,.92);color:var(--blue-600);backdrop-filter:blur(6px)}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-date{font-family:var(--font-en);font-size:12.5px;color:var(--gray-400);display:flex;align-items:center;gap:7px}
.news-date svg{width:14px;height:14px}
.news-body h3{font-size:16.5px;color:var(--blue-900);margin-top:11px;line-height:1.5;transition:color .25s}
.news-card:hover .news-body h3{color:var(--blue-600)}
.news-body p{margin-top:11px;font-size:13.5px;color:var(--gray-500);line-height:1.75;flex:1}
.news-link{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--blue-600)}
.news-link svg{width:14px;height:14px;transition:transform .3s}
.news-card:hover .news-link svg{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{background:#04203F;color:#9DB6D6;position:relative;overflow:hidden;padding-top:72px}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue-700),var(--cyan),var(--blue-600))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:52px}
.footer-brand .brand-en{color:#fff}
.footer-brand .brand-cn{color:#7C9BC0}
.footer-brand p{margin-top:20px;font-size:13.5px;line-height:1.85;color:#7C9BC0;max-width:330px}
.footer-social{display:flex;gap:11px;margin-top:22px}
.footer-social a{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);transition:.3s;color:#9DB6D6}
.footer-social a:hover{background:var(--blue-600);color:#fff;border-color:transparent;transform:translateY(-3px)}
.footer-social svg{width:17px;height:17px}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:20px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:13.5px;color:#8FADD1;transition:.25s;display:inline-flex;align-items:center;gap:8px}
.footer-col a:hover{color:var(--cyan);transform:translateX(3px)}
.footer-contact li{display:flex;gap:11px;font-size:13.5px;color:#8FADD1;line-height:1.7;align-items:flex-start}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:var(--blue-400)}
.footer-contact b{color:#fff;font-family:var(--font-en);font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#6E8DB4}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--cyan)}

/* 回到顶部 */
.to-top{position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:14px;border:0;cursor:pointer;z-index:800;
  background:linear-gradient(140deg,var(--blue-600),var(--blue-500));color:#fff;box-shadow:var(--sh-blue);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(14px);transition:.35s}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-3px)}
.to-top svg{width:19px;height:19px}

/* 悬浮联系 */
.float-cta{position:fixed;right:26px;bottom:86px;z-index:800;display:flex;flex-direction:column;gap:11px}
.float-cta a{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:#fff;color:var(--blue-600);
  box-shadow:var(--sh-2);border:1px solid var(--gray-200);transition:.3s;position:relative}
.float-cta a:hover{background:var(--blue-600);color:#fff;transform:translateY(-3px);border-color:transparent}
.float-cta svg{width:21px;height:21px}

/* ---------- 滚动动效 ---------- */
/* 滚动揭示：仅当 html 带 rk-anim（由 head 内联脚本写入）时才隐藏，JS 失效时可正常浏览 */
html.rk-anim .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.8,.3,1),transform .8s cubic-bezier(.2,.8,.3,1)}
html.rk-anim .reveal.in{opacity:1;transform:none}
html.rk-anim .reveal[data-d="1"]{transition-delay:.09s}
html.rk-anim .reveal[data-d="2"]{transition-delay:.18s}
html.rk-anim .reveal[data-d="3"]{transition-delay:.27s}
html.rk-anim .reveal[data-d="4"]{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important;transition:none!important}*{animation:none!important}}

.hidden{display:none!important}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .mobile-menu{display:block}
  .hero-grid-2{grid-template-columns:1fr;gap:44px}
  /* 单列时改用「上下堆叠」：绝对定位 + 固定高度会让行溢出卡片底边并与小卡重叠 */
  .hero-visual{height:auto;max-width:540px;display:flex;flex-direction:column;gap:18px}
  .chip-main,.chip-mini{position:relative;inset:auto;width:100%}
  .chip-main{padding:22px}
  .chip-mini{
    display:flex;align-items:center;gap:16px;padding:15px 18px;
  }
  .chip-mini .t{flex:1}
  .chip-mini .n{margin-top:0}
  .chip-mini .bar{margin-top:0;width:110px;flex:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:38px}
  .cta-band{grid-template-columns:1fr;padding:44px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:44px}
}
@media (max-width:820px){
  .section{padding:66px 0}
  .section--tight{padding:52px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-searchbar{grid-template-columns:1fr;transform:translateY(34px);padding:14px;border-radius:var(--r-lg)}
  .hero-searchbar .btn{width:100%}
  .hero{padding-top:70px}
  /* 窄屏内容变高，电路纹理会被放大并穿过正文，降低存在感以免影响阅读 */
  .hero-circuit{opacity:.2}
  .hero-stats{gap:30px}
  .topbar-left .topbar-item.hide-sm{display:none}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:26px}
  .page-hero{padding:58px 0 52px}
  .hero-search-tags{margin-top:56px;padding-bottom:46px}
  .float-cta{display:none}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  /* 导航：小屏收起次级信息与主 CTA（移动菜单内已提供），避免撑破视口 */
  .nav-actions{gap:8px}
  .nav-actions > .btn{display:none}
  .lang-switch button{padding:6px 10px;font-size:12px}
  .brand-mark{width:38px;height:38px;border-radius:11px}
  .brand-mark svg{width:20px;height:20px}
  .brand-en{font-size:17px}
  .brand-cn{font-size:10.5px;letter-spacing:.16em}
  .topbar .container{gap:10px}
  .topbar-left{gap:14px}
  .topbar-item{font-size:11.5px}
  .topbar-right{display:none}
  .hero-visual{max-width:100%;gap:14px}
  .hero-badge{font-size:11.5px;padding:6px 14px 6px 9px;margin-bottom:20px}
  .hero-cta{gap:10px}
  .hero-cta .btn{padding:0 18px;font-size:14px}
  .chip-main{padding:18px}
  .chip-rows{gap:8px;margin-top:14px}
  .chip-row{padding:8px 12px;font-size:12px}
  .chip-mini{padding:13px 16px;gap:12px}
  .chip-mini .t{font-size:11px}
  .chip-mini .n{font-size:21px}
  .chip-mini .bar{width:82px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;text-align:center;gap:12px}
  .cta-band{padding:34px 26px}
  .form-card{padding:22px}
  .kv{grid-template-columns:1fr;gap:2px}
  .kv .k{font-size:12.5px}
  .brand-strip .logo-wall{justify-content:center;gap:20px}
  .to-top{right:16px;bottom:16px}
}