/* =========================================================
   HUD · 高科技科幻风格（仅首页 home / index.html 加载）
   粒子网格网络 + 科技栅格 + 雷达扫描 + 钛晶核心 + 等宽科技字体
   仅覆盖首页视觉，不影响内容 / SEO / 多语言 / 功能
   ========================================================= */

/* ---------- 1. 高科技调色板（覆盖首页 :root 变量） ---------- */
:root{
  --bg:#03101b;
  --bg-soft:rgba(8,20,33,.55);
  --panel:rgba(7,18,30,.72);
  --ink:#e8f3f9;
  --ink-2:#c6d8e4;
  --muted:#8ea7ba;
  --line:rgba(0,229,255,.16);
  --accent:#00e5ff;        /* 电光青 */
  --accent-2:#7c5cff;      /* 科技紫 */
  --accent-3:#d8b15a;      /* 钛金（少量点缀） */
  --accent-soft:rgba(0,229,255,.10);
  --dark:#020a12;
  --dark-2:#061521;
  --dark-line:rgba(0,229,255,.18);
  --mono:"SFMono-Regular",Consolas,"Roboto Mono","DejaVu Sans Mono",Menlo,monospace;
  --shadow:0 18px 50px -28px rgba(0,0,0,.8);
  --shadow-sm:0 6px 22px -14px rgba(0,0,0,.7);
}

/* ---------- 2. 全页深空科技背景 ---------- */
body{
  background:
    radial-gradient(85% 60% at 12% -8%, rgba(0,229,255,.08), transparent 60%),
    radial-gradient(75% 55% at 90% 4%, rgba(124,92,255,.08), transparent 60%),
    radial-gradient(60% 50% at 50% 122%, rgba(216,177,90,.05), transparent 60%),
    #03101b;
  color:var(--ink);
}
/* 固定的科技栅格 + 星点层 */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    radial-gradient(1px 1px at 13% 17%, rgba(220,240,255,.6), transparent),
    radial-gradient(1px 1px at 29% 63%, rgba(180,220,255,.5), transparent),
    radial-gradient(1px 1px at 46% 11%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 68% 45%, rgba(200,225,255,.55), transparent),
    radial-gradient(1px 1px at 83% 73%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 92% 21%, rgba(200,225,255,.5), transparent),
    radial-gradient(1px 1px at 8% 85%, rgba(255,255,255,.4), transparent),
    radial-gradient(1px 1px at 56% 90%, rgba(200,225,255,.45), transparent),
    linear-gradient(rgba(0,229,255,.035) 1px, transparent 1px) 0 0/100% 48px,
    linear-gradient(90deg, rgba(0,229,255,.035) 1px, transparent 1px) 0 0/48px 100%;
  -webkit-mask:radial-gradient(140% 120% at 50% 0%, #000 55%, transparent 100%);
          mask:radial-gradient(140% 120% at 50% 0%, #000 55%, transparent 100%);
}

/* ---------- 3. 头部：滚动后转科技玻璃 ---------- */
.site-header.scrolled{background:rgba(5,15,26,.82);border-color:rgba(0,229,255,.20);backdrop-filter:blur(10px)}
.site-header.scrolled .brand{color:#eaf6fb}
.site-header.scrolled .nav-links a{color:#c6d8e4}
.site-header.scrolled .nav-links a.is-active,
.site-header.scrolled .nav-links a:hover{color:#00e5ff}
.site-header.scrolled .menu-toggle span{background:#eaf6fb}

/* ---------- 4. HERO：科技栅格 + 粒子网络 + 雷达扫描 ---------- */
.hero{background:var(--dark);padding:56px 0 0;
  display:flex;flex-direction:column;min-height:100vh;min-height:100svh}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden;
  background:
    radial-gradient(70% 60% at 16% 24%, rgba(0,229,255,.14), transparent 60%),
    radial-gradient(60% 55% at 84% 26%, rgba(124,92,255,.14), transparent 60%),
    radial-gradient(120% 120% at 50% 0%, #081726 0%, #04101b 55%, #020a12 100%)}
.hero-bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 30%;z-index:0;transform-origin:60% 40%;animation:shipDrift 38s ease-in-out infinite}
.ship-glow{position:absolute;z-index:1;right:9%;top:16%;width:36%;height:30%;pointer-events:none;
  background:radial-gradient(50% 50% at 58% 56%, rgba(0,229,255,.26), rgba(124,92,255,.13) 46%, transparent 72%);
  filter:blur(7px);animation:enginePulse 3.4s ease-in-out infinite}
/* 场景素材虚影：化工/航空/海洋 三张素材沿右缘分层融入战舰背景（全息残影感） */
.hero-bg .scene-ghost{position:absolute;inset:auto;z-index:1;pointer-events:none;object-fit:cover;
  mix-blend-mode:screen;filter:saturate(1.15);animation:ghostBreathe 46s ease-in-out infinite}
.hero-bg .scene-ghost-1{right:0;bottom:0;width:38%;height:56%;opacity:.14;
  -webkit-mask:radial-gradient(80% 80% at 72% 72%, #000 28%, transparent 74%);
          mask:radial-gradient(80% 80% at 72% 72%, #000 28%, transparent 74%)}
.hero-bg .scene-ghost-2{right:0;top:0;width:26%;height:44%;opacity:.10;animation-duration:58s;animation-direction:reverse;
  -webkit-mask:radial-gradient(80% 80% at 75% 25%, #000 25%, transparent 72%);
          mask:radial-gradient(80% 80% at 75% 25%, #000 25%, transparent 72%)}
.hero-bg .scene-ghost-3{right:0;top:32%;width:22%;height:46%;opacity:.09;animation-duration:64s;
  -webkit-mask:radial-gradient(75% 75% at 80% 50%, #000 22%, transparent 70%);
          mask:radial-gradient(75% 75% at 80% 50%, #000 22%, transparent 70%)}
@keyframes ghostBreathe{0%,100%{opacity:.08}50%{opacity:.19}}
/* RTL：阿语时文字翻到右侧，虚影镜像到左侧（HUD 核心一侧），避开文字区 */
[dir="rtl"] .hero-bg .scene-ghost-1{right:auto;left:0;
  -webkit-mask:radial-gradient(80% 80% at 28% 72%, #000 28%, transparent 74%);
          mask:radial-gradient(80% 80% at 28% 72%, #000 28%, transparent 74%)}
[dir="rtl"] .hero-bg .scene-ghost-2{right:auto;left:0;
  -webkit-mask:radial-gradient(80% 80% at 25% 25%, #000 25%, transparent 72%);
          mask:radial-gradient(80% 80% at 25% 25%, #000 25%, transparent 72%)}
[dir="rtl"] .hero-bg .scene-ghost-3{right:auto;left:0;
  -webkit-mask:radial-gradient(75% 75% at 20% 50%, #000 22%, transparent 70%);
          mask:radial-gradient(75% 75% at 20% 50%, #000 22%, transparent 70%)}
.mesh-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none;opacity:.5}
.hero-overlay{position:absolute;inset:0;z-index:3;
  background:
    linear-gradient(100deg, rgba(2,9,16,.93) 0%, rgba(4,14,24,.66) 46%, rgba(5,16,28,.30) 100%),
    linear-gradient(180deg, rgba(2,9,16,.35) 0%, transparent 22%, transparent 70%, rgba(3,10,18,.85) 100%),
    radial-gradient(120% 100% at 72% 30%, rgba(0,229,255,.08), transparent 60%)}
/* 顶部扫描线 + 底部淡出 */
.hero::before{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(0deg, rgba(0,229,255,.04) 0 1px, transparent 1px 4px);
  -webkit-mask:linear-gradient(180deg,#000,transparent 70%);
          mask:linear-gradient(180deg,#000,transparent 70%)}
/* HERO 四角 HUD 定位角标 */
.hero::after{content:"";position:absolute;inset:18px;z-index:3;pointer-events:none;
  background:
    linear-gradient(var(--accent),var(--accent)) 0 0/26px 2px no-repeat,
    linear-gradient(var(--accent),var(--accent)) 0 0/2px 26px no-repeat,
    linear-gradient(var(--accent),var(--accent)) 100% 100%/26px 2px no-repeat,
    linear-gradient(var(--accent),var(--accent)) 100% 100%/2px 26px no-repeat;
  opacity:.5}
.hero-grid{position:relative;z-index:4}

/* ---------- 5. HERO 文字风格（等宽科技排版） ---------- */
.kicker{font-family:var(--mono);text-transform:uppercase;letter-spacing:.16em;font-size:.72rem;color:var(--accent)}
.kicker::before{content:"";display:inline-block;width:18px;height:2px;background:var(--accent);vertical-align:middle;margin-inline-end:10px;box-shadow:0 0 8px var(--accent)}
.hero-copy h1{font-weight:800;letter-spacing:.01em;line-height:1.08}
.hero-copy h1 span{color:#eef6fb;text-shadow:0 0 24px rgba(0,229,255,.30)}
.hero-slogan{font-family:var(--mono);font-size:1.02rem;letter-spacing:.06em;
  background:linear-gradient(100deg,#00e5ff,#7c5cff);-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 22px rgba(0,229,255,.25)}
.hero-intro{color:#bcd2e0;font-size:1.02rem;line-height:1.75}
.hero-region{font-family:var(--mono);letter-spacing:.04em;color:#02131f;background:linear-gradient(120deg,#37f4ff,#00e5ff);box-shadow:0 6px 22px -10px rgba(0,229,255,.8)}
.hero-sectors{font-family:var(--mono);font-size:.82rem;letter-spacing:.05em;color:#c6d8e4}
.hero-sectors span{color:#00e5ff;font-weight:600}
.hero-trust{font-family:var(--mono);letter-spacing:.06em}
.hero-trust li{color:#dff4fb;border-color:rgba(0,229,255,.40);background:rgba(0,229,255,.08);box-shadow:0 0 0 1px rgba(0,229,255,.12) inset,0 0 16px -6px rgba(0,229,255,.5)}

/* 按钮霓虹 */
.button-primary{box-shadow:0 12px 34px -12px rgba(0,229,255,.6)}
.button:hover{box-shadow:0 12px 26px -12px rgba(0,229,255,.8)}
.button-link{color:#00e5ff}
.button-link-light{color:#37f4ff}

/* ---------- 6. HERO 可视化：钛晶 HUD 核心 ---------- */
.holo-system{position:relative;aspect-ratio:1/1;width:min(100%,440px);margin-inline:auto;
  filter:drop-shadow(0 0 30px rgba(0,229,255,.18))}
.holo-ring{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(0,229,255,.18)}
.holo-ring-1{inset:1%;border-style:dashed;border-color:rgba(0,229,255,.40);animation:spin 40s linear infinite}
.holo-sweep{position:absolute;inset:0;border-radius:50%;
  background:conic-gradient(from 0deg, rgba(0,229,255,.28), rgba(0,229,255,0) 26%, rgba(0,229,255,0) 100%);
  animation:spin 5.5s linear infinite;
  -webkit-mask:radial-gradient(circle, transparent 30%, #000 31%);
          mask:radial-gradient(circle, transparent 30%, #000 31%)}
.holo-core{position:absolute;inset:0;display:grid;place-items:center}
/* 三体·水滴核心 3D（canvas 软件 3D：镜面水滴 + 环绕光球） */
.droplet-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none;
  filter:drop-shadow(0 0 22px rgba(0,229,255,.35)) drop-shadow(0 12px 34px rgba(124,92,255,.28))}
.holo-label{position:relative;text-align:center;z-index:2}
/* 品牌字 ALLOYTI 改由 .droplet-canvas 以软件 3D 环绕绘制；此处仅保留元素数据读数 */
.holo-label small{display:block;font-family:var(--mono);color:#a8dcef;font-size:.74rem;letter-spacing:.20em;
  text-shadow:0 0 12px rgba(0,229,255,.6),0 0 26px rgba(0,229,255,.3)}
.holo-chip{position:absolute;font-family:var(--mono);font-size:.64rem;letter-spacing:.12em;font-weight:700;color:#eaf6fb;
  background:rgba(4,14,26,.8);border:1px solid rgba(0,229,255,.35);padding:6px 10px;border-radius:4px;
  box-shadow:0 4px 14px -6px rgba(0,0,0,.6),0 0 14px -4px rgba(0,229,255,.5)}
.holo-chip-a{top:3%;left:50%;transform:translateX(-50%)}
.holo-chip-b{top:50%;right:-4%;transform:translateY(-50%)}
.holo-chip-c{bottom:4%;left:50%;transform:translateX(-50%)}
.holo-chip-d{top:50%;left:-4%;transform:translateY(-50%)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes shipDrift{
  0%{transform:scale(1.06) translate3d(-1.2%, .7%, 0)}
  50%{transform:scale(1.13) translate3d(1.3%, -.7%, 0)}
  100%{transform:scale(1.06) translate3d(-1.2%, .7%, 0)}
}
@keyframes enginePulse{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:.95;transform:scale(1.09)}}

/* ---------- 7. 区块标题 / 正文：科技排版 ---------- */
.section-heading{position:relative;padding:4px 0}
.section-heading::before,.section-heading::after{content:"";position:absolute;width:16px;height:16px;border:2px solid var(--accent);opacity:.55}
.section-heading::before{top:0;left:0;border-right:none;border-bottom:none}
.section-heading::after{bottom:0;right:0;border-left:none;border-top:none}
.section-heading h2,.about-intro h2,.quality-intro h2,.checklist-grid h2,
.contact h2,.page-hero h1{color:#eaf6fb;letter-spacing:.01em;text-shadow:0 0 22px rgba(0,229,255,.16)}
.section-heading p{color:#a9c0d2}
.kicker-light{color:#37f4ff}
h1,h2,h3{color:var(--ink)}

/* ---------- 8. 卡片 / 面板：深色玻璃 + HUD 角标 ---------- */
.link-card,.product-card,.quality-list li,.checklist-items li,.about-points li,
.contact-card,.section-foot,.cta-band,.inquiry-form,.dialog{
  background:var(--panel)!important;border:1px solid var(--line);
  box-shadow:0 18px 50px -30px rgba(0,0,0,.8),0 0 0 1px rgba(0,229,255,.04) inset;
  backdrop-filter:blur(4px)}
.link-card{position:relative}
.link-card::after{content:"";position:absolute;top:10px;right:10px;width:12px;height:12px;border:2px solid var(--accent);border-left:none;border-bottom:none;opacity:.5}
.link-card h3,.about-points h3,.quality-list h3,.checklist-items li,.dialog-content h2{color:#eaf6fb}
.product-tags span{color:#bff4ff;background:rgba(0,229,255,.10)}
.product-body h3{color:#eaf6fb}
.product-index{background:rgba(4,14,26,.85)}
.spec-table th{background:rgba(8,20,33,.85);color:#c6d8e4}
.spec-table td{color:#c6d8e4}
.product-more{color:#00e5ff}
.cta-band{background:rgba(0,229,255,.06)!important;border-color:rgba(0,229,255,.32)!important}

/* ---------- 9. 表单：科技输入框 ---------- */
.field>span{font-family:var(--mono);letter-spacing:.04em;color:#c6d8e4}
.field input,.field select,.field textarea{background:rgba(4,14,26,.7);border-color:rgba(0,229,255,.22);color:#e8f3f9;font-family:var(--mono)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#00e5ff;box-shadow:0 0 0 3px rgba(0,229,255,.20)}
.field textarea{background:rgba(4,14,26,.7)}
.file-field input[type="file"]{background:rgba(4,14,26,.5)}
.consent{color:#c6d8e4}
.form-note,.form-actions small{color:var(--muted)}

/* ---------- 10. 页脚：更深空 ---------- */
.site-footer{background:#020a12;color:#8ea7ba}
.footer-col-title{color:#eaf6fb}
.footer-brand p{color:#7d93a6}
.footer-col a{color:#8ea7ba}
.footer-bottom{color:#74899c}

/* ---------- 11. 移动端菜单：深色 ---------- */
@media (max-width:760px){
  .scene-ghost{display:none}
  .nav-links{background:rgba(5,15,26,.97);border-color:rgba(0,229,255,.20)}
  .nav-links a{color:#c6d8e4!important;padding:13px 0;border-bottom:1px solid rgba(0,229,255,.10)}
  .nav-links a.is-active,.nav-links a:hover{color:#00e5ff}
  .nav-contact{color:#02131f!important;background:linear-gradient(120deg,#37f4ff,#00e5ff)}
  .site-header.scrolled .nav-links a{color:#c6d8e4}
  .lang-toggle{color:#e8f3f9;background-color:rgba(8,20,33,.9);border-color:rgba(0,229,255,.22)}
}

/* ---------- 12. 首页应用场景：第一屏底部 6 宫格 HUD 图卡 ---------- */
.hero-scenes{position:relative;z-index:4;margin-top:auto;padding:20px 0 28px}
.hero-scenes .section-heading{margin-bottom:16px}
.hero-scenes h2{font-size:clamp(1.4rem,2.4vw,1.9rem)}
.hero-scenes .section-heading p{max-width:420px}
.scene-grid{list-style:none;margin:0;padding:0;display:grid;gap:18px;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.scene-card{position:relative;overflow:hidden;border-radius:12px;
  border:1px solid rgba(0,229,255,.22);background:rgba(7,18,30,.72);
  box-shadow:0 18px 50px -30px rgba(0,0,0,.8),0 0 0 1px rgba(0,229,255,.04) inset;
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease}
.hero-scenes .scene-card{aspect-ratio:auto;height:clamp(92px,12vh,140px)}
.scene-card img{width:100%;height:100%;object-fit:cover;
  filter:saturate(1.03) contrast(1.02);transition:transform .5s ease}
/* 底部压暗：保证标签可读 */
.scene-card::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(2,9,16,.10) 0%,rgba(2,9,16,.28) 46%,rgba(2,10,18,.88) 100%)}
/* 右上 HUD 角标 */
.scene-card::after{content:"";position:absolute;top:8px;right:8px;width:12px;height:12px;z-index:2;
  border:2px solid rgba(0,229,255,.55);border-left:none;border-bottom:none;opacity:.7;
  transition:opacity .35s ease}
.scene-label{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:12px 12px 13px;
  font-family:var(--mono);font-size:.74rem;letter-spacing:.10em;text-transform:uppercase;
  color:#eaf6fb;text-shadow:0 2px 10px rgba(0,0,0,.65)}
.scene-label::before{content:"";display:inline-block;width:14px;height:2px;background:var(--accent);
  vertical-align:middle;margin-inline-end:8px;box-shadow:0 0 8px var(--accent)}
.scene-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.52);
  box-shadow:0 22px 44px -22px rgba(0,0,0,.9),0 0 26px -6px rgba(0,229,255,.38)}
.scene-card:hover img{transform:scale(1.07)}
.scene-card:hover::after{opacity:1}
/* 数据条贴近场景带，收紧首屏总高 */
.hero .hero-band{margin-top:16px;padding:20px 0}
.hero-band{position:relative;z-index:4}
/* 矮视口（如 1366×768 / 900px 高）：进一步收紧，保证场景带贴近首屏底部 */
@media (min-width:761px) and (max-height:960px){
  .hero{padding-top:44px}
  .hero-scenes{padding:12px 0 20px}
  .hero-scenes .section-heading{margin-bottom:10px}
  .hero-scenes .section-heading p{display:none}
  .hero-scenes .scene-card{height:clamp(84px,11vh,118px)}
  .hero .hero-band{margin-top:12px;padding:16px 0}
}
@media (max-width:560px){
  .hero-scenes{padding:16px 0 20px}
  .hero-scenes .section-heading{margin-bottom:12px}
  .scene-grid{gap:8px;grid-template-columns:repeat(3,1fr)}
  .hero-scenes .scene-card{height:92px}
  .scene-label{font-size:.6rem;letter-spacing:.04em;padding:6px 7px 7px}
  .scene-label::before{width:8px;margin-inline-end:5px}
}

/* ---------- 13. 降低动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  .holo-ring,.holo-sweep{animation:none}
  .hero-bg img,.ship-glow{animation:none}
  .hero-bg img{transform:none}
  .ship-glow{opacity:.6}
  .hero::before{opacity:.3}
  .hero-bg .scene-ghost{animation:none;opacity:.11}
  .scene-card,.scene-card img{transition:none}
  .scene-card:hover{transform:none}
  .scene-card:hover img{transform:none}
}