:root{
  --bg:#070b16;
  --bg-2:#0c1322;
  --surface:rgba(255,255,255,.04);
  --surface-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.10);
  --text:#eaf0fb;
  --muted:#94a3b8;
  --accent:#38bdf8;
  --accent-2:#6366f1;
  --accent-3:#2dd4bf;
  --accent-4:#f472b6;
  --radius:18px;
  --maxw:1180px;
  --grad:linear-gradient(120deg,#38bdf8,#6366f1 55%,#a855f7);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* 背景 */
.bg-grid{
  position:fixed;inset:0;z-index:-3;
  background-image:linear-gradient(rgba(56,189,248,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.05) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
}
.bg-glow{position:fixed;z-index:-2;border-radius:50%;filter:blur(90px);opacity:.45;pointer-events:none}
.bg-glow--1{width:520px;height:520px;background:#1e3a8a;top:-160px;left:-120px}
.bg-glow--2{width:480px;height:480px;background:#7c3aed;top:30%;right:-160px;opacity:.35}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(7,11,22,.6);border-bottom:1px solid var(--border)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700}
.brand__logo{height:40px;width:auto;display:block;flex-shrink:0;border-radius:6px}
.nav__links{display:flex;gap:26px;margin-left:auto}
.nav__links a{color:var(--muted);text-decoration:none;font-size:15px;transition:color .2s;position:relative}
.nav__links a:hover,.nav__links a.active{color:var(--text)}
.nav__links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-22px;height:2px;background:var(--grad)}
.nav__cta{margin-left:8px}
.lang{display:flex;align-items:center;gap:2px;margin-left:14px;padding:3px;border:1px solid var(--border);
  border-radius:10px;background:var(--surface)}
.lang button,.lang a,.lang span{background:none;border:0;color:var(--muted);font-size:13px;font-weight:600;cursor:pointer;
  padding:5px 10px;border-radius:7px;font-family:inherit;transition:color .2s,background .2s;text-decoration:none;display:inline-flex;align-items:center}
.lang button.active,.lang a.active,.lang span.active{background:var(--grad);color:#fff}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:var(--text);border-radius:2px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:15px;font-weight:600;text-decoration:none;
  cursor:pointer;border:1px solid transparent;transition:transform .15s,box-shadow .2s,background .2s}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(56,189,248,.3)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(99,102,241,.4)}
.btn--ghost{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn--ghost:hover{background:var(--surface-2);transform:translateY(-2px)}

/* Hero */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  max-width:var(--maxw);margin:0 auto;padding:120px 22px 60px;position:relative}
.pill{display:inline-block;padding:7px 16px;border-radius:999px;border:1px solid var(--border);
  background:var(--surface);color:var(--muted);font-size:14px;margin-bottom:26px}
.hero__title{font-size:clamp(40px,7vw,76px);line-height:1.08;font-weight:800;letter-spacing:-1px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{margin:26px 0 34px;max-width:680px;color:var(--muted);font-size:clamp(16px,2vw,19px)}
.hero__lead strong{color:var(--text);font-weight:600}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;
  padding-top:36px;border-top:1px solid var(--border)}
.stat b{display:block;font-size:clamp(28px,4vw,44px);font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:13.5px}
.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:6px;opacity:.8}
.hero__scroll-line{width:1px;height:34px;background:linear-gradient(var(--accent),transparent);animation:scroll 1.8s infinite}
.hero__scroll-arrow{width:22px;height:13px;color:var(--muted);animation:scroll-bounce 1.8s ease-in-out infinite}
@keyframes scroll{0%{opacity:.2;transform:scaleY(.4)}50%{opacity:1;transform:scaleY(1)}100%{opacity:.2;transform:scaleY(.4)}}
@keyframes scroll-bounce{0%,100%{transform:translateY(0);opacity:.45}50%{transform:translateY(5px);opacity:1}}

/* 通用 section */
.section{max-width:var(--maxw);margin:0 auto;padding:96px 22px}
.section__head{text-align:center;max-width:720px;margin:0 auto 54px}
.eyebrow{font-size:13px;letter-spacing:3px;color:var(--accent);font-weight:700;text-transform:uppercase}
.section__head h2{font-size:clamp(28px,4vw,44px);margin:14px 0 16px;font-weight:800;letter-spacing:-.5px}
.section__lead{color:var(--muted);font-size:17px}

/* 卡片 */
.cards{display:grid;gap:20px}
.cards--3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;transition:transform .2s,border-color .2s,background .2s}
.card:hover{transform:translateY(-4px);border-color:rgba(56,189,248,.4);background:var(--surface-2)}
.card__icon{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;margin-bottom:18px;border-radius:14px;background:linear-gradient(135deg,rgba(56,189,248,.18),rgba(99,102,241,.12));border:1px solid rgba(56,189,248,.32);box-shadow:inset 0 0 24px rgba(56,189,248,.08)}
.card__icon svg{width:28px;height:28px;stroke:#38bdf8;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;display:block}
.card__icon svg [fill="#38bdf8"]{stroke:none}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* 五大制造基地（联系页，整卡可点击外链） */
.base-card{color:inherit;text-decoration:none;display:flex;flex-direction:column}
.base-card .chip__k{margin-bottom:12px}
.base-card h3{margin-bottom:8px}
.base-card__url{color:var(--accent);font-size:11px;margin-top:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.base-card:hover{text-decoration:none}
.base-card:hover .base-card__url{text-decoration:underline}

/* 技术 */
.section--tech{background:linear-gradient(180deg,transparent,rgba(12,19,34,.5),transparent)}
.tech{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:48px 0;border-bottom:1px solid var(--border)}
.tech:last-child{border-bottom:0}
.tech--rev .tech__text{order:2}
.tech__tag{display:inline-block;font-size:13px;font-weight:800;letter-spacing:1px;padding:5px 14px;border-radius:8px;margin-bottom:14px}
.tech__tag--a{background:rgba(56,189,248,.14);color:#7dd3fc}
.tech__tag--b{background:rgba(45,212,191,.14);color:#5eead4}
.tech__tag--c{background:rgba(244,114,182,.14);color:#f9a8d4}
.tech__tag--w{background:rgba(6,182,212,.14);color:#67e8f9}
.tech__text h3{font-size:clamp(24px,3vw,34px);margin-bottom:6px;font-weight:800}
.tech__sub{color:var(--accent);font-size:14px;font-weight:600;margin-bottom:16px}
.tech__text p{color:var(--muted)}
.tech__pts{list-style:none;margin-top:18px;display:grid;gap:10px}
.tech__pts li{position:relative;padding-left:26px;color:#cbd5e1;font-size:15px}
.tech__pts li::before{content:"▹";position:absolute;left:0;color:var(--accent)}
.tech__viz{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.tech__photo{position:relative;margin:-18px -18px 18px;overflow:hidden;border-radius:16px 16px 0 0;line-height:0;
  background:radial-gradient(130% 130% at 50% 0%,#0c1a30 0%,#060c18 72%)}
.tech__svg{width:100%;height:auto;display:block;border-bottom:1px solid var(--border)}
/* 蓝图示意图中的扫描光束（演示曝光 / 喷印过程） */
.scanbeam{animation:scanX 4s ease-in-out infinite alternate}
.scanbeam--wide{animation-name:scanWide}
@keyframes scanX{from{transform:translateX(0)}to{transform:translateX(86px)}}
@keyframes scanWide{from{transform:translateX(0)}to{transform:translateX(240px)}}

/* 真实激光线：沿光路弯折 + 发光流动 */
.laser-route{fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:5 4;opacity:.5}
.laser-core{fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;
  filter:url(#laserGlow)}
.laser-flow{fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:14 240;filter:url(#laserGlow);animation:laserRun 2.6s linear infinite}
@keyframes laserRun{to{stroke-dashoffset:-500}}

/* 机身环境光晕（halo）：机身外缘柔和发光，缓慢呼吸脉动 */
.body-halo{animation:haloPulse 6s ease-in-out infinite}
@keyframes haloPulse{0%,100%{opacity:.8}50%{opacity:1}}

.spec-note{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.5;opacity:.85}

@media (prefers-reduced-motion: reduce){
  .scanbeam,.laser-flow,.body-halo{animation:none}
  .laser-flow{stroke-dasharray:none}
}
.diagram{width:100%;height:auto;display:block}
.diagram--a{--glow:#38bdf8}
.diagram--b{--glow:#2dd4bf}
.diagram--c{--glow:#f472b6}
.d-num{fill:#eaf0fb;font-size:13px;text-anchor:middle;font-weight:600}

/* 连接线：流动蚂蚁线，指示工序方向 */
.d-line{stroke:#475569;stroke-width:2;stroke-dasharray:6 5;animation:flow 1.1s linear infinite}
@keyframes flow{to{stroke-dashoffset:-22}}

/* 光束：明灭 + 扫描，体现曝光 */
.d-beam{fill:none;stroke:#38bdf8;stroke-width:1.6;stroke-dasharray:5 4;opacity:.8;
  animation:beam 1.8s ease-in-out infinite, beamscan 1.4s linear infinite}
.d-beam--b{stroke:#2dd4bf}
@keyframes beam{0%,100%{opacity:.3}50%{opacity:.95}}
@keyframes beamscan{to{stroke-dashoffset:-18}}

/* 工序节点：依次点亮，形成扫描式流转 */
.diagram > rect{animation:stage 2.6s ease-in-out infinite}
.diagram > rect:nth-of-type(1){animation-delay:0s}
.diagram > rect:nth-of-type(2){animation-delay:.55s}
.diagram > rect:nth-of-type(3){animation-delay:1.1s}
.diagram > rect:nth-of-type(4){animation-delay:1.65s}
@keyframes stage{0%,12%{filter:none}6%{filter:drop-shadow(0 0 9px var(--glow))}20%,100%{filter:none}}

.d-cap{fill:var(--muted);font-size:12px;text-anchor:middle}

/* 喷头落滴（喷墨） */
.d-drop{animation:drop 1.4s infinite}
@keyframes drop{0%{opacity:.25;transform:translateY(-4px)}60%{opacity:1;transform:translateY(8px)}100%{opacity:.25;transform:translateY(8px)}}

@media (prefers-reduced-motion: reduce){
  .d-line,.d-beam,.diagram > rect,.d-drop{animation:none}
  .d-line{stroke-dasharray:none}
}

/* 对比表 */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
.cmp{width:100%;border-collapse:collapse;min-width:560px}
.cmp th,.cmp td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:15px}
.cmp thead th{background:var(--surface-2);font-weight:700}
.cmp thead th:nth-child(3){color:var(--accent)}
.cmp td:first-child{color:var(--text);font-weight:600}
.cmp tbody tr:hover{background:rgba(56,189,248,.05)}
.cmp td:nth-child(3){color:#cbd5e1}

/* 应用 chips */
.cards--4{grid-template-columns:repeat(4,1fr)}
.cards--5{grid-template-columns:repeat(5,1fr)}
.cards--6{grid-template-columns:repeat(6,1fr)}
.chip{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 18px;transition:transform .2s,border-color .2s}
.chip:hover{transform:translateY(-4px);border-color:rgba(99,102,241,.45)}
.chip__k{display:inline-block;font-size:11px;font-weight:800;letter-spacing:1px;padding:3px 9px;border-radius:6px;
  background:rgba(99,102,241,.16);color:#c4b5fd;margin-bottom:12px}
.chip h4{font-size:16px;margin-bottom:6px}
.chip p{color:var(--muted);font-size:13.5px}

/* 联系 */
.section--contact{max-width:var(--maxw)}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:42px;background:var(--surface);
  border:1px solid var(--border);border-radius:24px;padding:46px}
.contact__left h2{font-size:clamp(24px,3vw,34px);margin:12px 0 14px;font-weight:800}
.contact__left p{color:var(--muted)}
.contact__list{list-style:none;margin-top:26px;display:grid;gap:14px}
.contact__list li{display:flex;gap:14px;align-items:center;color:#cbd5e1}
.contact__list span{width:54px;color:var(--muted);font-size:13px;flex-shrink:0}
.contact__form{display:grid;gap:14px;align-content:start}
.contact__form label{display:grid;gap:6px;font-size:13px;color:var(--muted)}
.contact__form input,.contact__form select{background:var(--bg-2);border:1px solid var(--border);
  color:var(--text);border-radius:10px;padding:12px 14px;font-size:15px;font-family:inherit}
.contact__form input:focus,.contact__form select:focus{outline:none;border-color:var(--accent)}
.form__hint{color:#bbf7d0;font-size:14px;background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.35);border-radius:10px;padding:12px 14px;line-height:1.5}
.form__hint--error{color:#fca5a5;background:rgba(248,113,113,.12);border-color:rgba(248,113,113,.4)}

/* footer */
.footer{border-top:1px solid var(--border);margin-top:40px}
.footer__inner{max-width:var(--maxw);margin:0 auto;padding:34px 22px;display:flex;
  align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer__copy{color:var(--muted);font-size:14px}
.footer__links{display:flex;gap:20px}
.footer__links a{color:var(--muted);text-decoration:none;font-size:14px;transition:color .2s}
.footer__links a:hover{color:var(--text)}
.brand--foot{font-size:16px}

/* reveal 动画 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media(max-width:900px){
  .cards--3,.cards--4{grid-template-columns:1fr 1fr}
  .cards--5,.cards--6{grid-template-columns:repeat(3,1fr)}
  .tech,.contact{grid-template-columns:1fr;gap:26px}
  .tech--rev .tech__text{order:0}
  .hero__stats{grid-template-columns:1fr 1fr;gap:26px 18px}
}
@media(max-width:640px){
  .nav__links{position:fixed;inset:64px 0 auto 0;flex-direction:column;gap:0;
    background:rgba(7,11,22,.97);border-bottom:1px solid var(--border);padding:10px 0;
    transform:translateY(-130%);transition:transform .3s}
  .nav__links.open{transform:none}
  .nav__links a{padding:14px 22px}
  .nav__links a.active::after{display:none}
  .nav__cta{display:none}
  .nav__toggle{display:flex}
  .cards--3,.cards--4,.cards--5,.cards--6,.hero__stats{grid-template-columns:1fr}
  .section{padding:70px 18px}
}

/* ===== 二级下拉菜单（核心技术） ===== */
.nav__item{position:relative}
.nav__item--has-menu > a{display:inline-flex;align-items:center}
.nav__item--has-menu > a::before{content:"";position:absolute;left:100%;top:50%;
  transform:translateY(-50%);margin-left:7px;width:0;height:0;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid var(--muted);transition:transform .2s,border-top-color .2s}
.nav__item--has-menu:hover > a::before{transform:translateY(-50%) rotate(180deg);border-top-color:var(--text)}
.nav__dropdown{position:absolute;top:100%;left:0;transform:translateY(10px);
  min-width:230px;background:rgba(10,16,30,.97);border:1px solid var(--border);border-radius:14px;
  padding:10px;display:flex;flex-direction:column;gap:2px;opacity:0;visibility:hidden;z-index:60;
  box-shadow:0 20px 50px rgba(0,0,0,.5);transition:opacity .2s,transform .2s,visibility .2s}
.nav__item--has-menu:hover .nav__dropdown{opacity:1;visibility:visible;transform:translateY(6px)}
.nav__dropdown a{color:var(--muted);text-decoration:none;font-size:14px;padding:10px 14px;border-radius:9px;
  transition:background .2s,color .2s;white-space:nowrap}
.nav__dropdown a::after{display:none}
.nav__dropdown a:hover,.nav__dropdown a.active{background:var(--surface-2);color:var(--text)}

/* ===== 内页页头 ===== */
.pagehero{max-width:var(--maxw);margin:0 auto;padding:128px 22px 30px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--text)}
.crumb span{margin:0 8px;opacity:.6}
.pagehero h1{font-size:clamp(32px,5vw,56px);font-weight:800;letter-spacing:-1px;margin:6px 0 16px;line-height:1.1}
.pagehero .lead{color:var(--muted);max-width:700px;font-size:clamp(15px,2vw,18px)}

/* ===== CTA 条 ===== */
.cta-band{max-width:var(--maxw);margin:0 auto 40px;padding:46px;border-radius:24px;
  background:linear-gradient(120deg,rgba(56,189,248,.12),rgba(99,102,241,.12));
  border:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:8px}
.cta-band p{color:var(--muted);max-width:560px}
.cta-band .btn{white-space:nowrap}

/* 概览卡片（首页技术概览，链向技术页） */
.ovcard{display:block;text-decoration:none;color:inherit;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;
  transition:transform .2s,border-color .2s,background .2s}
.ovcard:hover{transform:translateY(-4px);border-color:rgba(56,189,248,.4);background:var(--surface-2)}
.ovcard h3{font-size:18px;margin:6px 0 10px;line-height:1.35}
.ovcard p{color:var(--muted);font-size:14.5px;line-height:1.55}
.ovcard .ov-more{display:inline-block;margin-top:14px;color:var(--accent);font-weight:600;font-size:14px}

/* ===== 移动端：下拉展开为子列表 ===== */
@media(max-width:640px){
  .nav__item--has-menu{width:100%}
  .nav__item--has-menu > a::before{display:none}
  .nav__dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;
    border:0;background:transparent;padding:0 0 4px 10px;display:flex}
  .nav__dropdown a{padding:11px 22px}
  .cta-band{flex-direction:column;align-items:flex-start}
}

/* ===== 首页：五大技术协同 叙事区块 ===== */
.section--synergy{background:linear-gradient(180deg,transparent,rgba(12,19,34,.45),transparent)}
.synergy__diagram{max-width:920px;margin:0 auto}
.syn-diagram{width:100%;height:auto;display:block}
.syn-link{opacity:.55}
.syn-flow{stroke:#38bdf8;stroke-width:1.6;stroke-dasharray:5 7;opacity:.8;animation:flow 1.2s linear infinite}
.syn-node rect{transition:stroke-width .2s}
.syn-node:hover rect{stroke-width:2.4}
.syn-sub{font-family:inherit}
@media(prefers-reduced-motion:reduce){
  .syn-flow{animation:none;stroke-dasharray:none}
}