/* ============================================================
   JFGS 官网 · 前台样式（深色赛博朋克 / 未来科技风，响应式）
   ============================================================ */
:root{
  --bg:#05070d;
  --bg2:#0a0f1c;
  --panel:rgba(13,20,36,.72);
  --cyan:#00e5ff;
  --magenta:#ff2fd6;
  --purple:#7b5cff;
  --text:#d9e6ff;
  --muted:#7d8db0;
  --border:rgba(0,229,255,.28);
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:
    radial-gradient(1100px 560px at 78% -12%, rgba(123,92,255,.20), transparent 62%),
    radial-gradient(900px 520px at 8% -6%, rgba(0,229,255,.14), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;
  min-height:100vh;
  line-height:1.6;
  display:flex;flex-direction:column;
}
/* 电路板走线风格背景（方案2 · 混合方向版，已确认） */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:url("../img/design-v2.svg") center top / cover no-repeat;
  opacity:.62;
}
main,header,footer{position:relative;z-index:1}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,7,13,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-logo{font-size:26px;font-weight:900;letter-spacing:2px;line-height:1}
.brand-logo-text{
  display:inline-block;padding:5px 10px;
  background:linear-gradient(90deg,var(--cyan),var(--purple),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border:1px solid rgba(0,229,255,.5);border-radius:8px;
  box-shadow:0 0 12px rgba(0,229,255,.25);
}
.brand-logo-img{height:40px;max-width:150px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(0,229,255,.4))}
.brand-slogan{font-size:15px;color:var(--cyan);letter-spacing:1px;white-space:nowrap;text-shadow:0 0 8px rgba(0,229,255,.5)}
.site-nav{display:flex;gap:6px}
.site-nav a{
  color:var(--text);text-decoration:none;padding:8px 16px;border-radius:10px;
  font-size:15px;transition:all .25s;
}
.site-nav a:hover{color:#fff;background:rgba(0,229,255,.12);box-shadow:0 0 12px rgba(0,229,255,.25) inset}
.site-nav a.active{color:var(--cyan);background:rgba(0,229,255,.10);border:1px solid var(--border)}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;padding:8px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;background:var(--cyan);margin:5px 0;border-radius:2px;
  box-shadow:0 0 6px rgba(0,229,255,.6);transition:all .3s;
}

/* ---------- 首页：全屏轮播（占满主页面）+ 悬浮按钮 ---------- */
.home-hero{position:relative;width:100%}
.carousel{width:100%}
.carousel-viewport{
  position:relative;overflow:hidden;
  height:calc(100vh - 64px);
  min-height:440px;
  border-radius:0;
}
.carousel-track{display:flex;height:100%;transition:transform .55s ease}
.carousel-slide{flex:0 0 100%;position:relative}
.carousel-slide img{width:100%;height:100%;object-fit:cover;display:block}
.carousel-slide .cap{
  position:absolute;left:0;right:0;bottom:0;padding:26px 22px 16px;
  background:linear-gradient(transparent,rgba(5,7,13,.85));
  font-size:18px;letter-spacing:1px;
}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:40px;height:40px;border-radius:50%;
  background:rgba(5,7,13,.5);border:1px solid var(--border);color:var(--cyan);
  font-size:22px;cursor:pointer;transition:all .25s;line-height:1;
}
.carousel-arrow:hover{background:rgba(0,229,255,.2);box-shadow:0 0 16px rgba(0,229,255,.5)}
.carousel-arrow.prev{left:10px}
.carousel-arrow.next{right:10px}
.carousel-dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:5}
.carousel-dots i{
  width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.35);
  cursor:pointer;transition:all .3s;
}
.carousel-dots i.on{background:var(--cyan);box-shadow:0 0 10px var(--cyan);width:24px;border-radius:5px}
.carousel-empty{
  display:none;position:absolute;inset:0;align-items:center;justify-content:center;
  color:var(--muted);font-size:16px;letter-spacing:2px;
}
.carousel-empty.show{display:flex}

/* ---------- 首页：三大入口按钮（悬浮于轮播图下方，比指示点略高） ---------- */
.home-cta{
  position:absolute;left:0;right:0;bottom:64px;z-index:6;
  display:flex;justify-content:center;align-items:center;
  gap:26px;flex-wrap:wrap;padding:0 16px;
}
.cta-btn{
  display:flex;align-items:center;gap:14px;
  padding:16px 32px;min-width:230px;border-radius:18px;
  background:rgba(13,20,36,.55);
  border:1px solid var(--border);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  color:var(--text);text-decoration:none;
  transition:all .3s ease;
}
.cta-btn svg{
  width:36px;height:36px;stroke:var(--cyan);stroke-width:1.6;fill:none;flex-shrink:0;
  transition:transform .3s ease, stroke .3s ease;
}
.cta-btn .cta-text{display:flex;flex-direction:column;line-height:1.35}
.cta-btn .cta-text b{font-size:17px;letter-spacing:1px}
.cta-btn .cta-text span{font-size:13px;color:var(--muted)}
.cta-btn:hover{
  box-shadow:0 0 24px rgba(0,229,255,.55), 0 0 60px rgba(123,92,255,.30), inset 0 0 18px rgba(0,229,255,.08);
  border-color:rgba(0,229,255,.85);
  transform:translateY(-2px);
}
.cta-btn:hover svg{transform:scale(1.18);stroke:#fff;filter:drop-shadow(0 0 6px rgba(0,229,255,.9))}
.cta-btn:hover .cta-text span{color:var(--cyan)}

/* ---------- 子页面通用 ---------- */
.page-main{max-width:1200px;margin:0 auto;padding:30px 16px 60px;width:100%}
.page-hero{text-align:center;padding:16px 0 26px}
.page-hero h1{
  font-size:30px;letter-spacing:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple),var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .sub{color:var(--muted);font-size:14px;margin-top:8px}
.back-home-wrap{margin:6px 0 26px}
.back-home{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;border-radius:12px;color:var(--cyan);
  border:1px solid var(--border);background:rgba(13,20,36,.5);
  text-decoration:none;font-size:14px;transition:all .3s;
}
.back-home:hover{box-shadow:0 0 16px rgba(0,229,255,.4);color:#fff}

/* ---------- 产品卡片 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px}
.product-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:all .3s ease;
}
.product-card:hover{
  transform:translateY(-4px);
  box-shadow:0 0 22px rgba(0,229,255,.35), 0 8px 30px rgba(0,0,0,.5);
  border-color:rgba(0,229,255,.7);
}
.product-card .p-img{aspect-ratio:4/3;overflow:hidden;background:var(--bg2)}
.product-card .p-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product-card:hover .p-img img{transform:scale(1.06)}
.p-img-placeholder{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:14px;
}
.product-card .p-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.product-card .p-model{font-size:17px;font-weight:700;letter-spacing:1px;color:var(--cyan)}
.product-card .p-specs{font-size:13px;color:var(--text);white-space:pre-line}
.product-card .p-intro{font-size:13px;color:var(--muted);white-space:pre-line;flex:1}
.product-empty{text-align:center;color:var(--muted);padding:60px 0}

/* ---------- 保修查询 ---------- */
.query-panel{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;max-width:760px;margin:0 auto 26px;
  box-shadow:0 0 24px rgba(0,229,255,.08);
}
.query-panel h2{font-size:20px;color:var(--cyan);margin-bottom:6px;letter-spacing:1px}
.query-input-row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.query-input-row input{
  flex:1;min-width:220px;padding:13px 16px;border-radius:12px;
  background:rgba(5,7,13,.7);border:1px solid var(--border);color:var(--text);font-size:16px;letter-spacing:2px;
  outline:none;transition:all .3s;
}
.query-input-row input:focus{border-color:var(--cyan);box-shadow:0 0 12px rgba(0,229,255,.35)}
.query-input-row button{
  padding:13px 30px;border-radius:12px;border:1px solid var(--cyan);cursor:pointer;
  background:linear-gradient(90deg,rgba(0,229,255,.18),rgba(123,92,255,.18));
  color:var(--cyan);font-size:16px;letter-spacing:2px;transition:all .3s;
}
.query-input-row button:hover{box-shadow:0 0 18px rgba(0,229,255,.5);color:#fff}
.query-result{margin-top:20px;display:none}
.query-result.show{display:block}
.result-card{
  border:1px solid rgba(52,211,153,.5);background:rgba(52,211,153,.08);
  border-radius:12px;padding:18px 20px;
}
.result-card.warn{border-color:rgba(251,191,36,.5);background:rgba(251,191,36,.08)}
.result-card .row{
  display:flex;justify-content:space-between;gap:12px;padding:6px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);font-size:15px;
}
.result-card .row:last-child{border-bottom:none}
.result-card .k{color:var(--muted);flex-shrink:0}
.result-card .v{color:var(--text);text-align:right;word-break:break-all}
.badge{display:inline-block;padding:3px 12px;border-radius:20px;font-size:13px}
.badge.ok{background:rgba(52,211,153,.15);color:#6ee7b7;border:1px solid rgba(52,211,153,.5)}
.badge.expired{background:rgba(251,191,36,.15);color:#fcd34d;border:1px solid rgba(251,191,36,.5)}
.query-msg{text-align:center;color:var(--muted);padding:16px;font-size:15px}

/* ---------- 保修规则说明 ---------- */
.rule-panel{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;max-width:900px;margin:0 auto;
}
.rule-panel h2{color:var(--cyan);font-size:20px;margin-bottom:12px;letter-spacing:1px;border-left:4px solid var(--cyan);padding-left:12px}
.rule-content{color:var(--text);font-size:14px;white-space:pre-line;line-height:1.9}

/* ---------- 免责声明页 ---------- */
.disclaimer-box{max-width:900px;margin:0 auto;padding:8px 16px 60px}
.disclaimer-content{background:rgba(10,16,28,.7);border:1px solid var(--border);border-radius:14px;padding:28px 32px;color:var(--text);white-space:pre-wrap;line-height:1.9;min-height:200px;word-break:break-word}

/* ---------- 联系我们 ---------- */
.contact-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px;
  max-width:900px;margin:0 auto;
}
.contact-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;text-align:center;transition:all .3s;
}
.contact-card:hover{box-shadow:0 0 20px rgba(0,229,255,.3);border-color:rgba(0,229,255,.7)}
.contact-card svg{width:38px;height:38px;stroke:var(--cyan);stroke-width:1.6;fill:none;margin-bottom:12px}
.contact-card .t{color:var(--muted);font-size:13px;margin-bottom:6px;letter-spacing:2px}
.contact-card .d{color:var(--text);font-size:15px;word-break:break-all}

/* ---------- 页脚备案栏 ---------- */
.site-footer{border-top:1px solid var(--border);background:rgba(5,7,13,.9);margin-top:auto}
.footer-inner{max-width:1200px;margin:0 auto;padding:22px 16px;text-align:center;display:flex;flex-direction:column;gap:8px}
.footer-contact{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;font-size:14px;color:var(--text)}
.footer-contact span{padding:0 10px}
.footer-contact span+span{border-left:1px solid rgba(255,255,255,.18)}
.footer-icp{font-size:13px;color:var(--muted)}
.footer-text{font-size:14px;color:var(--text);text-align:center;white-space:pre-wrap;line-height:1.8}

/* ---------- 语言切换 ---------- */
.lang-switch{display:flex;align-items:center;gap:3px;margin-left:10px;padding:3px 5px;border:1px solid rgba(0,229,255,.25);border-radius:8px;background:rgba(0,229,255,.04)}
.lang-switch i{color:var(--cyan);font-style:normal;opacity:.55;font-size:12px}
.lang-switch button{background:transparent;border:none;color:var(--text);cursor:pointer;font-size:13px;padding:2px 7px;border-radius:6px;transition:all .25s;font-family:inherit}
.lang-switch button:hover{color:#fff;text-shadow:0 0 8px rgba(0,229,255,.6)}
.lang-switch button.on{color:var(--cyan);background:rgba(0,229,255,.14);box-shadow:0 0 8px rgba(0,229,255,.25) inset;font-weight:700}

/* ---------- 手机端适配 ---------- */
@media (max-width:860px){
  .nav-toggle{display:block}
  .site-nav{
    position:fixed;top:64px;left:0;right:0;flex-direction:column;
    background:rgba(5,7,13,.96);border-bottom:1px solid var(--border);
    padding:12px 16px;gap:4px;display:none;
  }
  .site-nav.open{display:flex}
  .site-nav a{padding:12px 14px;font-size:16px}
  .lang-switch{margin-left:0;margin-top:8px;justify-content:center;border:none;background:rgba(0,229,255,.06)}
  .lang-switch button{font-size:15px;padding:5px 14px}
  .brand-slogan{font-size:13px}
  .carousel-viewport{height:calc(100vh - 64px);min-height:480px}
  .carousel-slide .cap{font-size:14px}
  .home-cta{flex-direction:column;gap:14px;bottom:56px}
  .cta-btn{width:100%;max-width:340px;min-width:0;padding:13px 24px}
  .page-hero h1{font-size:24px}
}