/* ============================================================================
   acoubella — 全站样式（早期版本回退 + 必要补丁）
   - 基础来自 2025 早期 323 行版本
   - 补丁：cert-carousel / product-switcher / factory-pano / factory-gallery /
           mission-block / product-intro / product-app / feature-list
   ============================================================================ */

:root{
  --ink:#15212b;--ink-soft:#51606b;--paper:#ffffff;--white:#fff;
  --line:#dce2df;--line-soft:#e7ebe8;--line-faint:#f4f5f1;
  --accent:#bc7b40;--accent-deep:#8e592d;
  --gold:#e2b27b;--gold-soft:#dbaf78;--gold-bright:#e5b77f;
  --forest:#163b36;--forest-deep:#0f2622;--forest-darker:#102a26;
  --on-dark:#d1ddd9;--on-dark-soft:#c5d3ce;--on-dark-muted:#8da59d;
  --on-dark-faint:#a9c1b9;--on-dark-elevated:#e1e8e5;--on-dark-emph:#ccdad5;
  --content:min(1180px,calc(100vw - 64px));
  --display:"Noto Serif SC","Songti SC",STSong,serif;
  --sans:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
  --shadow-sm:0 4px 12px rgba(19,33,31,.06);
  --shadow-md:0 12px 28px rgba(19,33,31,.1);
  --shadow-lg:0 24px 48px rgba(19,33,31,.14);
  --radius:4px;
  --transition:.25s ease;
}
/* ===== Skip Link (无障碍) ===== */
.skip-link{position:absolute;top:-40px;left:0;background:var(--accent);color:#fff;padding:8px 16px;z-index:1000;font-size:14px;text-decoration:none;transition:top .2s}
.skip-link:focus{top:0}

/* ===== Focus Visible (键盘导航) ===== */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
a:focus-visible,button:focus-visible{box-shadow:0 0 0 3px rgba(188,123,64,.3)}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.75 var(--sans);overflow-x:hidden;position:relative}
body::before{content:"";position:fixed;inset:0;background:radial-gradient(ellipse at top right,rgba(188,123,64,.04) 0%,transparent 50%),radial-gradient(ellipse at bottom left,rgba(22,59,54,.03) 0%,transparent 50%);pointer-events:none;z-index:0}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}

/* ===== Inline-style helpers (replacements) ===== */
.center-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.kicker-gold{color:#e2b27b}
.map-img{width:100%;height:auto;display:block;margin-top:24px;border-radius:4px}
.text-mute-13{color:#d1ddd9;font-size:13px;margin:0}
.text-gold-strong{color:#dbaf78}
.privacy-hero{height:280px}
.privacy-section{max-width:880px;margin:auto}
.privacy-h2{font-size:24px;margin:0 0 16px}
.privacy-h2-spaced{font-size:24px;margin:32px 0 16px}
.privacy-list{padding-left:22px;line-height:2;color:var(--ink-soft)}
.privacy-p-spaced{margin-top:14px}
.privacy-foot{margin-top:32px;color:var(--ink-soft);font-size:13px}
.product-app{max-width:880px;margin:0 auto;padding:24px 28px;background:#f4f5f1;border-left:3px solid var(--accent);font-size:15px;line-height:1.9;color:var(--ink-soft)}
.icon-gold{color:var(--gold)}
.error-404{min-height:60vh;display:flex;align-items:center;justify-content:center;padding:80px 0}
.error-404-inner{text-align:center;max-width:640px;margin:auto}
.error-404-num{font:500 140px/1 var(--display);color:var(--forest);letter-spacing:.04em;margin-bottom:8px}
.error-404-title{font-size:32px;margin:0 0 16px}
.error-404-intro{max-width:480px;margin:0 auto 32px;font-size:16px}
.button-row-center{justify-content:center}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}

/* ===== Icon System (SVG sprite via <use>) ===== */
.icon{display:inline-block;width:1.1em;height:1.1em;vertical-align:-0.15em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s ease,color .25s ease}
.icon-lg{width:1.4em;height:1.4em}
.icon-xl{width:2em;height:2em}
.icon-2x{width:2.5em;height:2.5em}
.icon-3x{width:3em;height:3em;vertical-align:-0.4em}
.icon-box{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:10px;background:rgba(188,123,64,.1);color:var(--accent);transition:all .3s ease}
.icon-box:hover{background:var(--accent);color:#fff;transform:rotate(-8deg) scale(1.08)}
.icon-box.icon-dark{background:rgba(255,255,255,.08);color:var(--gold-soft)}
.icon-box.icon-dark:hover{background:var(--gold);color:var(--forest-darker)}
.icon-circle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:rgba(188,123,64,.1);color:var(--accent);transition:all .3s ease}
.icon-circle:hover{background:var(--accent);color:#fff;transform:scale(1.1)}
/* Footer contact icons (inline, small) */
.site-footer .icon-foot{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;background:rgba(229,183,127,.18);color:#e5b77f;border-radius:4px;flex-shrink:0;transition:all .25s ease}
.site-footer .icon-foot svg{width:12px;height:12px;display:block}
.site-footer p:hover .icon-foot{background:#e5b77f;color:#102a26}
.site-footer p{display:grid;grid-template-columns:20px 1fr;column-gap:10px;align-items:start;margin:0 0 12px;line-height:1.5}
.site-footer p > .icon-foot{grid-column:1;margin-top:3px}
.site-footer p > a,
.site-footer p > span:not(.icon-foot){grid-column:2;display:inline;line-height:1.5;align-self:start}
.site-footer .contact-num{color:#c5d3ce;line-height:1.5;display:inline}
.site-footer .contact-num .zh,.site-footer .contact-num .en{display:inline;vertical-align:baseline}
/* EN 模式下 footer 内 .en 强制 inline (覆盖全局 inline-block 规则) */
body.lang-en .site-footer p .en,
body.lang-en .site-footer .contact-num .en { display: inline !important; vertical-align: baseline; }

/* ===== Reveal & Parallax Engine ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}
.reveal[data-d="2"]{transition-delay:.2s}
.reveal[data-d="3"]{transition-delay:.3s}
.reveal[data-d="4"]{transition-delay:.4s}
.reveal[data-d="5"]{transition-delay:.5s}
.reveal-left{opacity:0;transform:translateX(-30px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-left.in{opacity:1;transform:none}
.reveal-right{opacity:0;transform:translateX(30px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-right.in{opacity:1;transform:none}
.reveal-scale{opacity:0;transform:scale(.92);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal-scale.in{opacity:1;transform:scale(1)}
@media(prefers-reduced-motion:reduce){
  .reveal,.reveal-left,.reveal-right,.reveal-scale{opacity:1;transform:none;transition:none}
}
/* Magnetic hover for buttons/links */
.magnetic{transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.magnetic:hover{transform:translateY(-3px) scale(1.02)}
/* Section decorative bg */
.bg-deco{position:absolute;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.bg-deco::before,.bg-deco::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.35}
.bg-deco::before{width:480px;height:480px;background:radial-gradient(circle,rgba(188,123,64,.18),transparent 70%);top:-120px;right:-120px;animation:float-a 16s ease-in-out infinite}
.bg-deco::after{width:380px;height:380px;background:radial-gradient(circle,rgba(22,59,54,.15),transparent 70%);bottom:-100px;left:-100px;animation:float-b 20s ease-in-out infinite}
/* 位置变体 */
.bg-deco.bg-deco-left::before{left:-120px;right:auto;background:radial-gradient(circle,rgba(22,59,54,.18),transparent 70%)}
.bg-deco.bg-deco-left::after{right:-100px;left:auto;top:30%;background:radial-gradient(circle,rgba(188,123,64,.15),transparent 70%)}
.bg-deco.bg-deco-bottom::before{top:auto;bottom:-150px;right:20%;background:radial-gradient(circle,rgba(22,59,54,.18),transparent 70%)}
.bg-deco.bg-deco-bottom::after{top:60%;left:15%;background:radial-gradient(circle,rgba(188,123,64,.15),transparent 70%)}
.bg-deco.bg-deco-soft::before{width:340px;height:340px;opacity:.22}
.bg-deco.bg-deco-soft::after{width:300px;height:300px;opacity:.22}
@keyframes float-a{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-30px,40px) scale(1.1)}}
@keyframes float-b{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-30px) scale(1.15)}}
/* Section needs position:relative for ::before/::after to anchor */
.section,.dark-section,.page-hero,.hero,.factory-pano,.cta{position:relative;overflow:hidden}
/* Gradient text */
.grad-text{background:linear-gradient(135deg,#e2b27b 0%,#f5d49a 50%,#bc7b40 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 2px 12px rgba(226,178,123,.25))}
/* Animated underline */
.ul-anim{position:relative;display:inline-block}
.ul-anim::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--accent);transition:width .4s cubic-bezier(.2,.7,.2,1)}
.ul-anim:hover::after{width:100%}
/* Decorative number watermark */
.watermark{position:absolute;font:500 280px/1 var(--display);color:rgba(188,123,64,.06);pointer-events:none;z-index:0;user-select:none;right:-20px;top:-40px;letter-spacing:-.05em}

/* ===== Header ===== */
.site-header{height:72px;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(21,33,43,.1);backdrop-filter:blur(12px);transition:box-shadow .3s,background .3s}
.site-header.scrolled{box-shadow:0 4px 24px rgba(15,38,34,.08);background:rgba(255,255,255,.97)}
.nav-wrap{width:100%;max-width:1280px;height:100%;margin:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:0;padding:0 24px}
.brand{display:flex;align-items:flex-end;gap:12px;font-weight:700;letter-spacing:.04em;color:var(--ink);padding:0 0 14px;margin:0;height:100%}
.brand img{height:48px;width:auto;object-fit:contain;flex-shrink:0;display:block;margin:0;padding:0}
.brand-text{display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;gap:0;line-height:1;margin:0;padding:0 0 4px;align-self:flex-end}
.brand small{display:block;color:var(--ink-soft);font-size:11px;font-weight:500;letter-spacing:.18em;line-height:1;white-space:nowrap}
.main-nav{display:flex;align-items:flex-end;gap:30px;padding:0 0 16px}
.main-nav a{font-size:14px;position:relative;padding:6px 0;color:var(--ink);transition:color .2s}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--transition)}
.main-nav a.active::after,.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--accent)}
.menu-toggle{display:none;border:0;background:transparent;font-size:24px;color:var(--forest);cursor:pointer}
.hero{position:relative;display:grid;align-items:center;overflow:hidden;background:#122926;color:#fff;min-height:480px;width:100%}
.hero-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:.7}
.hero-poster{position:absolute;inset:0;width:100%;height:100%;z-index:-1}
.hero-poster img{width:100%;height:100%;object-fit:cover;object-position:center;opacity:.7}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,22,20,.85) 0%,rgba(7,22,20,.55) 35%,rgba(7,22,20,.1) 70%,rgba(7,22,20,0) 100%)}
.hero-content{width:100%;margin:0 auto;padding:140px clamp(24px,6vw,80px) 140px clamp(24px,8vw,140px);position:relative;z-index:1;text-align:left;max-width:1440px}
.eyebrow{display:flex;align-items:center;gap:12px;text-transform:uppercase;letter-spacing:.18em;font-size:11px;font-weight:700;color:#e2b27b}
.eyebrow::before{content:"";width:34px;height:1px;background:currentColor}
.hero h1{font:500 clamp(40px,4.8vw,72px)/1.18 var(--display);letter-spacing:.035em;margin:22px 0;max-width:780px}
.hero p{max-width:560px;font-size:18px;color:#e9efec;line-height:1.7}
.button-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 23px;border:1px solid var(--accent);font-size:14px;transition:all .3s cubic-bezier(.2,.7,.2,1);cursor:pointer;font-weight:500;position:relative;overflow:hidden;letter-spacing:.04em}
.button svg{flex:none;width:18px;height:18px}
.button::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.15);transform:translateX(-100%);transition:transform .4s cubic-bezier(.2,.7,.2,1);pointer-events:none}
.button:hover::after{transform:translateX(0)}
.button.primary{background:var(--accent);color:#fff}
.button.primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;box-shadow:0 8px 20px rgba(188,123,64,.4)}
.button.ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.button.ghost:hover{background:#fff;color:var(--ink)}
.scroll-hint{position:absolute;left:50%;bottom:32px;transform:translateX(-50%);color:rgba(255,255,255,.6);font-size:20px;animation:bounce 2s infinite;z-index:2}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* ===== Category Nav (products.html 分类锚点) ===== */
.category-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;width:var(--content);margin:40px auto 0;padding:0 24px}
.category-nav .cat-pill{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:#fff;border:1px solid var(--line);color:var(--ink);font-size:14px;border-radius:24px;transition:all .25s ease}
.category-nav .cat-pill:hover,.category-nav .cat-pill:focus{background:var(--forest);color:#fff;border-color:var(--forest);transform:translateY(-1px);box-shadow:0 6px 16px rgba(15,38,34,.18)}
.category-nav .cat-pill span{display:inline-block;min-width:24px;padding:1px 8px;background:var(--line-faint);color:var(--ink-soft);font-size:11px;font-weight:600;border-radius:12px;text-align:center}
.category-nav .cat-pill:hover span{background:rgba(255,255,255,.18);color:#fff}
@media(max-width:650px){.category-nav{gap:8px;margin-top:28px;padding:0 18px}.category-nav .cat-pill{padding:8px 14px;font-size:13px}}

/* ===== Section ===== */
.section{width:var(--content);margin:auto;padding:104px 0}
.section.alt-bg{background:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:42px;flex-wrap:wrap}
.section-head .title{position:relative;padding-bottom:18px}
.section-head .title::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-deep));border-radius:2px}
.kicker{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;background:rgba(188,123,64,.1);color:var(--accent-deep);letter-spacing:.16em;font-size:11px;font-weight:700;text-transform:uppercase;border-radius:14px;margin-bottom:8px}
.kicker::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%}
.title{font:500 clamp(30px,3.5vw,48px)/1.25 var(--display);margin:9px 0 0;letter-spacing:.02em}
.section-intro{max-width:410px;color:var(--ink-soft);margin:0}
.dark-section{background:var(--forest);color:#fff}
.dark-section .section{padding:98px 0}
.dark-section .kicker{color:#dbaf78}
.dark-section .section-intro{color:#ccdad5}

/* ===== Split ===== */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.split-media{position:relative;overflow:hidden}
.split-media img{width:100%;aspect-ratio:16/9;height:auto;object-fit:cover;object-position:center;transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}
.split-media:hover img{transform:scale(1.06)}
.split-media::after{content:"";position:absolute;width:42%;height:34%;right:-16px;bottom:-16px;border:1px solid var(--accent);z-index:-1}
.lead{font:500 26px/1.6 var(--display);margin:24px 0}
.copy{color:var(--ink-soft)}

/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.25);margin-top:42px;gap:0}
.stat{padding:25px 18px 0 0}
.stat+ .stat{padding-left:22px;border-left:1px solid rgba(255,255,255,.25)}
.stat strong{display:block;font:500 38px var(--display);color:#e2b27b;letter-spacing:.02em;line-height:1.1}
.stat strong sup{font-size:.6em;vertical-align:super}
.stat span{font-size:13px;color:#d1ddd9;line-height:1.5;display:block;margin-top:6px}
.stat--tag strong{display:inline-block;font:600 16px/1.2 var(--mono);color:#e2b27b;background:rgba(226,178,123,.14);border:1px solid rgba(226,178,123,.35);padding:5px 10px;border-radius:4px;letter-spacing:.06em;margin-bottom:8px}
.stat--tag span{font-size:13px;color:#d1ddd9}

/* ===== Cert Grid ===== */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:42px}
.cert{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.15);padding:30px 24px;transition:all var(--transition)}
.cert:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.cert strong{display:block;font:500 32px var(--display);color:#e2b27b;margin-bottom:6px}
.cert sup{font-size:.6em;vertical-align:super}
.cert span{color:#d1ddd9;font-size:13px}

/* ===== Product Grid ===== */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.product-card{background:#fff;overflow:hidden;min-height:392px;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s cubic-bezier(.2,.7,.2,1);color:var(--ink);position:relative}
.product-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--forest));transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.product-card:hover::before{transform:scaleX(1)}
.product-card:hover{transform:translateY(-10px);box-shadow:0 20px 40px rgba(15,38,34,.16);color:var(--ink)}
.product-card img{width:100%;height:235px;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.product-card:hover img{transform:scale(1.06)}
.product-card div{padding:22px;display:flex;flex-direction:column;flex:1}
.product-card h3{font:500 22px var(--display);margin:0 0 8px;transition:color .25s}
.product-card:hover h3{color:var(--accent-deep)}
.product-card p{color:var(--ink-soft);font-size:13px;margin:0 0 14px}
.card-spec{list-style:none;padding:0;margin:0 0 14px;border-top:1px dashed var(--line-soft);padding-top:12px}
.card-spec li{font-size:12px;color:var(--ink-soft);line-height:1.7;padding:2px 0 2px 14px;position:relative}
.card-spec li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;background:var(--accent);border-radius:50%}
.card-link{color:var(--accent-deep);font-weight:600;font-size:13px;margin-top:auto}

/* ===== Scenes ===== */
.scenes{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.scene{position:relative;height:280px;overflow:hidden;color:#fff;background:#172d2a;display:block;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.scene:hover{transform:translateY(-6px)}
.scene img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.7;transition:transform .6s cubic-bezier(.2,.7,.2,1),opacity .4s}
.scene:hover img{transform:scale(1.1);opacity:.95}
.scene::after{content:"";position:absolute;inset:60% 0 0;background:linear-gradient(transparent,rgba(6,20,18,.88));transition:inset .4s}
.scene:hover::after{inset:50% 0 0}
.scene span{position:absolute;left:20px;bottom:20px;z-index:1;font:500 18px var(--display);transition:transform .3s,color .3s}
.scene:hover span{color:var(--gold-soft);transform:translateX(4px)}

/* ===== Process / Steps ===== */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{padding:30px 24px;background:#fff;border-top:3px solid var(--accent);transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;position:relative;overflow:hidden}
.step::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--accent),transparent);transform:scaleX(0);transform-origin:left;transition:transform .4s}
.step:hover::after{transform:scaleX(1)}
.step:hover{transform:translateY(-6px);box-shadow:0 16px 32px rgba(15,38,34,.1)}
.step-num{font:500 36px var(--display);color:var(--accent);margin-bottom:12px;line-height:1}
.step h3{font:500 20px var(--display);margin:0 0 8px}
.step p{color:var(--ink-soft);font-size:13px;margin:0}

/* ===== Page Hero ===== */
.page-hero{height:390px;position:relative;display:grid;align-items:end;background:#183c36;color:#fff;overflow:hidden}
.page-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.48}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,28,25,.8),rgba(8,28,25,.28))}
.page-hero .inner{position:relative;z-index:1;width:var(--content);margin:0 auto;padding-bottom:68px}
.page-hero h1{font:500 clamp(40px,5vw,66px) var(--display);margin:14px 0 0}
.page-hero p{margin:8px 0 0;color:#e1e8e5}

/* ===== Filter Row ===== */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.filter{border:1px solid var(--line);background:transparent;padding:9px 16px;cursor:pointer;transition:all var(--transition);font-size:14px;color:var(--ink)}
.filter.active,.filter:hover{background:var(--forest);color:#fff;border-color:var(--forest)}

/* ===== Catalog / Case Grid ===== */
.catalog{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.catalog-card{background:#fff;border:1px solid #e7ebe8;transition:all var(--transition)}
.catalog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.catalog-card a{display:block;color:var(--ink)}
.catalog-card img{width:100%;height:220px;object-fit:contain;padding:18px;background:#ffffff}
.catalog-card div{padding:18px}
.catalog-card h3{margin:0;font:500 19px var(--display)}
.catalog-card p{margin:7px 0 12px;color:var(--ink-soft);font-size:13px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{height:385px;position:relative;color:#fff;overflow:hidden;background:#172d2a;transition:transform .3s}
.case a{display:block;height:100%;color:#fff}
.case img{height:100%;width:100%;object-fit:cover;opacity:.72;transition:.4s}
.case:hover img{transform:scale(1.05);opacity:.9}
.case div{position:absolute;z-index:1;bottom:0;padding:25px;left:0;right:0}
.case small{color:#edbd84;letter-spacing:.14em;font-size:11px}
.case h3{font:500 25px var(--display);margin:8px 0}
.case p{margin:0;font-size:13px;line-height:1.6;color:#eef2ef}
.case .card-link{display:block;margin-top:14px;color:#edbd84;font-weight:600;font-size:13px}
.case::after{content:"";position:absolute;inset:40% 0 0;background:linear-gradient(transparent,rgba(6,20,18,.88))}

/* ===== Timeline / Milestones ===== */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.timeline article{padding:30px;background:#fff;border-top:3px solid var(--accent);transition:all var(--transition)}
.timeline article:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.timeline strong{font:500 40px var(--display);color:var(--accent);display:block;margin-bottom:8px}
.timeline h3{font:500 19px var(--display);margin:0 0 6px}
.timeline p{margin:0;color:var(--ink-soft);font-size:13px}

.milestones{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}
.milestone{padding:28px;background:#fff;border-left:3px solid var(--accent);transition:all var(--transition)}
.milestone:hover{transform:translateX(4px);box-shadow:var(--shadow-md)}
.milestone .year{font:500 32px var(--display);color:var(--accent-deep);margin-bottom:8px}
.milestone h3{font:500 19px var(--display);margin:0 0 8px}
.milestone p{color:var(--ink-soft);font-size:13px;margin:0}

/* ===== Values ===== */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.value{padding:32px 24px;background:#fff;text-align:center;transition:all var(--transition)}
.value:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.value h3{font:500 24px var(--display);color:var(--accent-deep);margin:0 0 12px}
.value p{color:var(--ink-soft);margin:0}

/* ===== Downloads ===== */
.downloads{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.download-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.15);padding:24px;color:#fff;transition:all var(--transition);display:block}
.download-item:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-4px)}
.download-item strong{display:block;font:500 18px var(--display);margin-bottom:6px}
.download-item span{color:#ccdad5;font-size:12px}

/* ===== Contact Layout ===== */
.contact-layout{display:grid;grid-template-columns:1.1fr 1.4fr;gap:50px}
.contact-info,.contact-form{padding:48px;background:#fff}
.contact-form{border:1px solid var(--line);box-shadow:0 8px 24px rgba(15,38,34,.06)}
.contact-info{background:var(--forest);color:#fff;border:1px solid rgba(255,255,255,.1)}
.contact-info .kicker{color:#dbaf78}
.contact-info .title{color:#fff;font:600 clamp(28px,3.2vw,42px)/1.35 var(--sans);letter-spacing:.01em;margin:14px 0 16px}
.contact-info p{color:#d1ddd9}
.contact-list{list-style:none;padding:30px 0 0;margin:0;border-top:1px solid rgba(255,255,255,.15)}
.contact-list li{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1);display:grid;grid-template-columns:80px 1fr;gap:16px}
.contact-list strong{color:#dbaf78;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.contact-list span{color:#e1e8e5;font-size:15px}
.contact-social{margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.15)}
.contact-social strong{display:block;color:#dbaf78;font-size:12px;letter-spacing:.1em;margin-bottom:14px;text-transform:uppercase}
.social-row{display:flex;gap:10px;flex-wrap:wrap}
.social-row a{padding:7px 16px;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:13px;transition:all var(--transition)}
.social-row a:hover{background:#fff;color:var(--forest)}

.form-intro{color:var(--ink-soft);margin:0 0 24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:12px;color:var(--ink-soft);letter-spacing:.05em}
.field input,.field select,.field textarea{padding:11px 14px;border:1px solid var(--line);background:#fff;color:var(--ink);transition:border-color var(--transition);font-size:14px;border-radius:0}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.form-submit{margin-top:24px}
.note{margin-top:14px;font-size:13px;color:var(--accent-deep);min-height:18px}

/* ===== Map Placeholder ===== */
.map-placeholder{background:#fff;padding:60px 30px;text-align:center;border:1px solid var(--line)}
.map-placeholder p{margin:8px 0;color:var(--ink);font-size:16px}
.map-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:24px;align-items:stretch}
.map-info{background:#fff;padding:32px 28px;border:1px solid var(--line);display:flex;flex-direction:column;gap:18px;box-shadow:0 8px 24px rgba(15,38,34,.06)}
.map-info-item{display:flex;gap:14px;align-items:flex-start}
.map-info-icon{flex-shrink:0;width:38px;height:38px;background:rgba(188,123,64,.12);color:var(--accent);border-radius:6px;display:flex;align-items:center;justify-content:center}
.map-info-item strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px;font-weight:600}
.map-info-item p{margin:0;font-size:13px;color:var(--ink-soft);line-height:1.6}
.map-actions{display:flex;gap:10px;margin-top:auto;flex-wrap:wrap}
.map-actions .button{flex:1;min-width:140px;padding:0 16px;font-size:13px}
.map-copy-msg{font-size:12px;color:var(--accent);margin:8px 0 0;min-height:16px;transition:opacity .3s}
.map-container{width:100%;min-height:420px;border:1px solid var(--line);background:#f4f5f1;position:relative;overflow:hidden}
.map-loading{display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:420px;color:var(--ink-soft);font-size:14px;background:#f4f5f1}
.map-fallback{position:relative;width:100%;height:100%;min-height:420px;background:linear-gradient(135deg,#e8ede9 0%,#d4dcd6 50%,#e8ede9 100%);display:flex;align-items:center;justify-content:center;overflow:hidden}
.map-fallback-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(22,59,54,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(22,59,54,.08) 1px,transparent 1px);background-size:30px 30px;opacity:.6}
.map-fallback-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:32px;text-align:center}
.map-fallback-content .amap-marker{margin-bottom:6px}
.map-fallback-addr{margin:0;color:var(--forest);font-size:16px;font-weight:500;letter-spacing:.02em}
.map-fallback-tel{margin:0;color:#5a6b66;font-size:13px}
.map-fallback-hint{margin:8px 0 0;color:#8a9994;font-size:12px;letter-spacing:.05em;background:rgba(255,255,255,.6);padding:6px 12px;border-radius:14px}
.map-static-card{display:flex;flex-direction:column;border:1px solid var(--line);background:#fff;box-shadow:0 8px 24px rgba(15,38,34,.06);overflow:hidden;text-decoration:none;color:inherit;transition:box-shadow .3s,transform .3s;cursor:pointer}
.map-static-card:hover{box-shadow:0 12px 36px rgba(15,38,34,.12);transform:translateY(-2px)}
.map-static-bg{position:relative;width:100%;height:340px;background:linear-gradient(135deg,#e8ede9 0%,#d4dcd6 50%,#e8ede9 100%);overflow:hidden}
.map-static-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(22,59,54,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(22,59,54,.1) 1px,transparent 1px);background-size:24px 24px}
.map-static-streets{position:absolute;inset:0}
.street-h{position:absolute;left:0;right:0;height:14px;background:rgba(255,255,255,.7);box-shadow:0 0 0 1px rgba(22,59,54,.08)}
.street-h:nth-child(1){top:35%}
.street-h:nth-child(2){top:68%}
.street-v{position:absolute;top:0;bottom:0;width:14px;background:rgba(255,255,255,.7);box-shadow:0 0 0 1px rgba(22,59,54,.08)}
.street-v:nth-child(3){left:30%}
.street-v:nth-child(4){left:72%}
.map-static-marker{position:absolute;top:50%;left:50%;transform:translate(-50%,-100%);display:flex;flex-direction:column;align-items:center;z-index:2}
.marker-pulse{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:60px;height:60px;background:rgba(188,123,64,.25);border-radius:50%;animation:marker-pulse 2s ease-out infinite}
@keyframes marker-pulse{0%{transform:translateX(-50%) scale(.6);opacity:1}100%{transform:translateX(-50%) scale(2.2);opacity:0}}
.marker-pin{position:relative;z-index:2;width:36px;height:36px;background:var(--accent);border-radius:50% 50% 50% 0;transform:rotate(-45deg);box-shadow:0 4px 12px rgba(0,0,0,.3);display:flex;align-items:center;justify-content:center}
.marker-pin::after{content:"";width:14px;height:14px;background:#fff;border-radius:50%;transform:rotate(45deg)}
.marker-label{position:relative;z-index:1;background:var(--forest);color:#fff;padding:6px 12px;border-radius:4px;font-size:13px;margin-top:10px;white-space:nowrap;box-shadow:0 2px 6px rgba(0,0,0,.2);font-weight:500}
.marker-label::before{content:"";position:absolute;top:-5px;left:50%;transform:translateX(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:6px solid var(--forest)}
.map-static-footer{padding:20px 24px;background:#fff;display:flex;flex-direction:column;gap:6px}
.map-static-footer strong{font-size:15px;color:var(--ink);font-weight:600}
.map-static-footer span{font-size:13px;color:var(--ink-soft);line-height:1.5}
.map-static-cta{margin-top:4px;color:var(--accent);font-weight:500;letter-spacing:.02em}
.map-container .amap-marker{display:flex;flex-direction:column;align-items:center}
.map-container .marker-pin{width:32px;height:32px;background:var(--accent);border-radius:50% 50% 50% 0;transform:rotate(-45deg);box-shadow:0 4px 12px rgba(0,0,0,.25);position:relative;display:flex;align-items:center;justify-content:center}
.map-container .marker-pin::after{content:"";width:12px;height:12px;background:#fff;border-radius:50%;transform:rotate(45deg)}
.map-container .marker-label{background:var(--forest);color:#fff;padding:6px 12px;border-radius:4px;font-size:13px;margin-top:8px;white-space:nowrap;box-shadow:0 2px 6px rgba(0,0,0,.2)}
.map-container .marker-label::before{content:"";position:absolute;top:-5px;left:50%;transform:translateX(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:6px solid var(--forest)}

/* ===== CTA Box ===== */
.cta{padding:80px 0}
.cta-box{background:var(--forest);color:#fff;padding:72px 48px;text-align:center;position:relative;overflow:hidden;box-shadow:0 20px 60px rgba(15,38,34,.25)}
.cta-box::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,transparent,var(--accent),var(--gold),var(--accent),transparent)}
.cta-box .title{color:#fff;margin-bottom:14px;position:relative;z-index:1}
.cta-box p{color:#d1ddd9;max-width:560px;margin:0 auto 28px;position:relative;z-index:1}
.cta-box .button{background:var(--accent);color:#fff;border-color:var(--accent);position:relative;z-index:1;font-size:15px;padding:14px 32px}
.cta-box .button.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta-box .button.ghost:hover{background:#fff;color:var(--forest)}

/* ===== Product Detail ===== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start;background:#ffffff}
.product-gallery{background:#ffffff;padding:0;border-radius:var(--radius);position:sticky;top:130px}
.product-gallery img{width:100%;height:auto;max-height:480px;object-fit:contain;display:block;background:#ffffff}
.product-summary .title{margin:0 0 16px}
/* 产品详情页 ghost 按钮（浅色背景上可见） */
.product-summary .button.ghost{color:var(--accent);border-color:var(--accent);background:transparent}
.product-summary .button.ghost:hover{background:var(--accent);color:#fff}
.product-spec{list-style:none;padding:0;margin:24px 0;border-top:1px solid var(--line)}
.product-spec li{padding:14px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:start}
.product-spec strong{color:var(--ink-soft);font-weight:500;font-size:13px;letter-spacing:.05em}
.product-spec span{color:var(--ink);font-size:14px}

/* 产品详情：介绍 / 适用范围 */
.product-intro{background:#fff;border-radius:8px;padding:32px 36px;margin:0 auto;max-width:900px;box-shadow:0 2px 12px rgba(19,33,31,.06);position:relative;overflow:hidden}
.product-intro::before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--accent),var(--gold))}
.product-intro-body{font-size:15px;line-height:1.85;color:var(--ink-soft);max-width:none}
.product-intro-body p{margin:0 0 18px}
.product-intro-body p:last-child{margin-bottom:0}
.product-intro-body p:first-child::first-letter{font-size:1.8em;float:left;line-height:1;margin-right:6px;color:var(--accent);font-weight:600}
/* English mode: left-align, no justify, slightly tighter letter-spacing */
body.lang-en .product-intro-body p{text-align:left;letter-spacing:.01em}
/* Chinese mode: justify */
body.lang-zh .product-intro-body p{text-align:justify}
.product-app-body{padding:24px 28px;background:var(--line-faint);border-left:3px solid var(--accent);font-size:15px;line-height:1.9;color:var(--ink-soft);max-width:880px;margin:0 auto}

/* ===== Case Detail ===== */
.case-detail{display:grid;grid-template-columns:1fr 2fr;gap:60px;align-items:start}
.case-meta{background:#fff;padding:32px;position:sticky;top:130px}
.case-meta .title{margin:0 0 20px;font-size:30px}
.case-story h3{margin:24px 0 10px}
.case-story h3:first-child{margin-top:0}
.case-story p{color:var(--ink-soft);margin:0 0 14px}
.case-info{margin:0;padding:0}
.case-info dt{color:var(--accent-deep);font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin-top:18px;font-weight:600}
.case-info dt:first-child{margin-top:0}
.case-info dd{margin:6px 0 0;color:var(--ink);font-size:15px}
.case-section{margin-top:36px}
.case-section h3{font:500 24px/1.3 var(--display);margin:0 0 14px;color:var(--ink)}
.case-section p{color:var(--ink-soft);margin:0;line-height:1.85}

/* ===== Feature List 装饰面板金点列表 ===== */
.feature-list{list-style:none;padding:0;margin:0 auto 32px;width:min(960px,calc(100% - 48px));display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px 24px}
.feature-list li{position:relative;padding:12px 16px 12px 36px;font-size:14px;color:var(--ink-soft);line-height:1.6;background:#fff;border:1px solid var(--line-soft);border-radius:6px;transition:all .25s ease}
.alt-bg .feature-list li{background:rgba(255,255,255,.6);backdrop-filter:blur(4px)}
.feature-list li:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:0 4px 12px rgba(15,38,34,.06)}
.feature-list li::before{content:"";position:absolute;left:14px;top:18px;width:8px;height:8px;background:var(--accent);border-radius:50%}

/* ===== Arrow Link ===== */
.arrow-link{margin-top:auto;display:inline-flex;gap:9px;align-items:center;font-weight:700;font-size:13px;color:var(--accent-deep)}
.arrow-link:hover .icon{transform:translateX(4px)}

/* About checks list */
.about-checks{list-style:none;padding:0;margin:24px 0 28px;display:flex;flex-direction:column;gap:12px}
.about-checks li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--ink);line-height:1.6}
.about-checks li .icon-circle{width:24px;height:24px;font-size:11px;flex-shrink:0;background:rgba(188,123,64,.15);color:var(--accent)}
.about-checks li:hover .icon-circle{background:var(--accent);color:#fff}
.arrow-link:hover{color:var(--accent)}

/* ===== Footer ===== */
.site-footer{background:#102a26;color:#d6e0dc}
.footer-inner{width:var(--content);margin:auto;padding:52px 0 25px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{font:500 22px var(--display);color:#fff}
.footer-brand small{display:block;font:11px var(--sans);letter-spacing:.16em;color:#a9c1b9;margin-top:7px}
.site-footer h4{font-size:12px;color:#e5b77f;letter-spacing:.13em;margin:0 0 12px;text-transform:uppercase}
.site-footer p,.site-footer a{font-size:13px;color:#c5d3ce;line-height:1.7}
.site-footer a:hover{color:#e5b77f}
.copyright{width:var(--content);margin:auto;border-top:1px solid rgba(255,255,255,.13);padding:18px 0;color:#8da59d;font-size:12px}
.copyright a{color:#a9c1b9}
.copyright a:hover{color:#e5b77f}

/* ===== Back to Top ===== */
.back-to-top{position:fixed;right:30px;bottom:30px;width:46px;height:46px;background:var(--forest);color:#fff;border:0;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:all var(--transition);z-index:60;box-shadow:var(--shadow-md)}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--accent)}

/* ===== Cert Carousel 资质轮播 ===== */
.cert-carousel{position:relative;max-width:980px;margin:30px auto 0;padding:0 60px}
.cert-viewport{position:relative;overflow:hidden;border-radius:6px;background:#ffffff;aspect-ratio:4/3;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.cert-track{display:flex;height:100%;transition:transform .45s cubic-bezier(.4,0,.2,1);will-change:transform}
.cert-slide{flex:0 0 100%;min-width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#ffffff}
.cert-slide img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;cursor:zoom-in;transition:transform .3s}
.cert-slide img:hover{transform:scale(1.02)}
.cert-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:0;background:rgba(255,255,255,.92);color:var(--forest);font-size:28px;line-height:1;cursor:pointer;border-radius:50%;box-shadow:var(--shadow-sm);transition:all .2s;z-index:2}
.cert-nav:hover{background:var(--accent);color:#fff}
.cert-prev{left:8px}
.cert-next{right:8px}
.cert-counter{text-align:center;margin-top:18px;font-size:13px;color:var(--ink-soft);letter-spacing:.1em}
.cert-counter span[data-current]{color:var(--accent);font-weight:600;font-size:15px}
.cert-thumbs{display:flex;gap:6px;margin-top:18px;overflow-x:auto;padding:4px 2px 12px;scrollbar-width:thin}
.cert-thumbs::-webkit-scrollbar{height:6px}
.cert-thumbs::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.cert-thumb{flex:0 0 auto;width:80px;height:60px;border:2px solid transparent;background:#fff;cursor:pointer;padding:0;overflow:hidden;border-radius:3px;transition:all .2s}
.cert-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.cert-thumb:hover{border-color:var(--ink-soft)}
.cert-thumb.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}

.cert-lightbox{position:fixed;inset:0;background:rgba(7,22,20,.94);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .25s;padding:30px}
.cert-lightbox.open{opacity:1;pointer-events:auto}
.cert-lightbox img{max-width:96vw;max-height:92vh;object-fit:contain;box-shadow:0 30px 60px rgba(0,0,0,.5)}
.cert-lightbox-close{position:absolute;top:24px;right:30px;width:48px;height:48px;border:0;background:rgba(255,255,255,.12);color:#fff;font-size:28px;line-height:1;cursor:pointer;border-radius:50%;transition:all .2s}
.cert-lightbox-close:hover{background:var(--accent)}
.cert-lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);width:56px;height:56px;border:0;background:rgba(255,255,255,.1);color:#fff;font-size:32px;line-height:1;cursor:pointer;border-radius:50%;transition:all .2s}
.cert-lightbox-nav:hover{background:var(--accent);color:#fff}
.cert-lightbox-prev{left:30px}
.cert-lightbox-next{right:30px}

/* ===== Product Switcher 浮动快速切换 ===== */
.product-switcher{position:fixed;right:24px;bottom:90px;z-index:55;font-family:var(--sans)}
.pswitch-toggle{display:flex;align-items:center;gap:8px;padding:12px 18px;background:var(--forest);color:#fff;border:0;cursor:pointer;font-size:14px;font-weight:500;border-radius:30px;box-shadow:0 6px 18px rgba(15,38,34,.25);transition:all .25s}
.pswitch-toggle:hover{background:var(--accent);transform:translateY(-2px)}
.pswitch-toggle svg{flex-shrink:0}
.pswitch-toggle-label{display:inline}
.pswitch-panel{position:absolute;right:0;bottom:calc(100% + 12px);width:340px;max-height:70vh;background:#fff;border:1px solid var(--line);box-shadow:0 18px 50px rgba(15,38,34,.22);border-radius:8px;overflow:hidden;display:none;flex-direction:column;animation:pswitchIn .25s ease}
.product-switcher.open .pswitch-panel{display:flex}
@keyframes pswitchIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.pswitch-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink);letter-spacing:.04em}
.pswitch-close{width:28px;height:28px;border:0;background:transparent;color:var(--ink-soft);font-size:22px;line-height:1;cursor:pointer;border-radius:4px;transition:all .2s}
.pswitch-close:hover{background:var(--line-soft);color:var(--ink)}
.pswitch-search{margin:10px 12px;padding:8px 12px;border:1px solid var(--line);background:#fafafa;font:13px var(--sans);color:var(--ink);border-radius:4px;outline:none;transition:border-color .2s}
.pswitch-search:focus{border-color:var(--accent);background:#fff}
.pswitch-list{flex:1;overflow-y:auto;padding:4px 0 8px}
.pswitch-item{display:flex;align-items:center;gap:12px;padding:10px 14px;color:var(--ink);text-decoration:none;transition:background .15s;font-size:13px;border-left:3px solid transparent}
.pswitch-item:hover{background:var(--line-faint);color:var(--ink)}
.pswitch-item.active{background:var(--line-soft);border-left-color:var(--accent);font-weight:600}
.pswitch-item img{width:44px;height:44px;object-fit:contain;background:var(--line-faint);flex-shrink:0;border-radius:3px}
.pswitch-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pswitch-empty{padding:32px 16px;text-align:center;color:var(--ink-soft);font-size:13px}

/* ===== Factory Panorama 工厂实力区 ===== */
.factory-pano{position:relative;color:#fff;padding:120px 24px;overflow:hidden;background:#0f2622}
.factory-pano-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat;z-index:0;animation:panoZoom 24s ease-in-out infinite alternate;will-change:transform}
@keyframes panoZoom{
  0%{transform:scale(1) translate(0,0)}
  100%{transform:scale(1.12) translate(-1.5%,1.5%)}
}
.factory-pano-title{color:#fff;font-size:clamp(28px,3.6vw,46px);margin:14px 0 18px}
.factory-pano-lead{color:rgba(255,255,255,.85);max-width:640px;font-size:16px;line-height:1.8}
.watermark-cta{font-size:200px;top:10px}
.factory-pano-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,38,34,.78) 0%,rgba(15,38,34,.55) 50%,rgba(15,38,34,.85) 100%);z-index:1}
.factory-pano-inner{position:relative;z-index:2;width:min(1180px,calc(100vw - 64px));margin:0 auto;display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center}
.factory-pano-head .kicker{display:inline-block;padding:6px 16px;font-size:11px;letter-spacing:.28em;font-weight:700;color:#e2b27b;border:1px solid rgba(226,178,123,.4);border-radius:24px;margin-bottom:18px}
.factory-pano-stats{display:grid;grid-template-columns:1fr 1fr;gap:36px 24px;padding:36px 32px;background:rgba(255,255,255,.05);border:1px solid rgba(226,178,123,.18);border-radius:6px;backdrop-filter:blur(8px)}
.fps-item{display:flex;flex-direction:column;gap:6px;padding-left:18px;border-left:2px solid #bc7b40;position:relative;transition:transform .35s ease}
.fps-item:hover{transform:translateX(4px)}
.fps-item::before{content:"";position:absolute;left:-7px;top:0;width:12px;height:12px;background:var(--accent);border-radius:50%;opacity:0;transition:opacity .3s}
.fps-item:hover::before{opacity:1}
.fps-item strong{font:500 clamp(28px,3vw,40px)/1 var(--display);color:#e2b27b;letter-spacing:.02em;white-space:nowrap}
.fps-item span{font-size:13px;color:rgba(255,255,255,.78);letter-spacing:.05em}

/* ===== Factory Gallery 工厂图廊 ===== */
.factory-gallery{padding:60px 24px;background:#fff;position:relative;z-index:5}
.fg-grid{display:flex;flex-wrap:nowrap;justify-content:center;gap:18px;max-width:min(1800px,calc(100vw - 48px));margin:0 auto;position:relative;z-index:1}
.fg-item{
  flex:1 1 0;min-width:0;position:relative;display:block;overflow:visible;
  border-radius:8px;background:#f4f5f1;
  transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .5s cubic-bezier(.2,.7,.2,1);
  box-shadow:0 6px 18px rgba(15,38,34,.10),0 2px 6px rgba(15,38,34,.06);
  transform-style:preserve-3d;perspective:1200px;z-index:1;
}
.fg-item::before{
  content:"";position:absolute;inset:0;border-radius:8px;
  background:linear-gradient(135deg,rgba(226,178,123,0) 0%,rgba(226,178,123,.12) 50%,rgba(226,178,123,0) 100%);
  opacity:0;transition:opacity .4s;z-index:1;pointer-events:none;
}
.fg-item:hover{
  transform:translateY(-12px) scale(1.08) rotateX(2deg);
  box-shadow:0 30px 60px -10px rgba(15,38,34,.35),0 18px 30px -8px rgba(188,123,64,.25);
  z-index:100;
}
.fg-item:hover::before{opacity:1}
.fg-item img{
  width:100%;height:100%;display:block;aspect-ratio:16/9;object-fit:cover;
  border-radius:8px;transition:transform .6s cubic-bezier(.2,.7,.2,1),filter .4s;
  filter:brightness(.95) saturate(.95);
}
.fg-item:hover img{transform:scale(1.12);filter:brightness(1.05) saturate(1.1)}

/* 浮窗大图: hover 时弹出 */
.fg-preview{
  position:absolute;left:50%;top:0;
  width:min(560px,90vw);aspect-ratio:16/9;
  border-radius:10px;overflow:hidden;
  background-size:cover;background-position:center;
  box-shadow:0 40px 80px rgba(0,0,0,.45),0 0 0 1px rgba(226,178,123,.3);
  opacity:0;pointer-events:none;
  transform:translate(-50%,-110%) scale(.9) rotateX(8deg);
  transform-origin:bottom center;
  transition:opacity .35s ease,transform .45s cubic-bezier(.2,.7,.2,1);
  z-index:20;
}
.fg-item:hover .fg-preview{opacity:1;transform:translate(-50%,-115%) scale(1) rotateX(0)}

/* ===== Mission Block 品牌使命区 ===== */
.mission-block{position:relative;background:var(--forest);color:#fff;padding:120px 24px;overflow:hidden;isolation:isolate}
.mission-block::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at top,rgba(188,123,64,.16) 0%,rgba(15,38,34,0) 60%);z-index:-1}
/* 声音波纹: 三层同心圆缓慢脉动 */
.mission-block::after{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:200px;height:200px;background:url(logo.png) center/contain no-repeat;opacity:.08;pointer-events:none;z-index:0;filter:brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(355deg)}

/* 声音波纹容器 */
.mission-waves{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(900px,90vw);height:min(900px,90vw);pointer-events:none;z-index:0}
.mission-waves .wave{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;border:1px solid rgba(226,178,123,.18);opacity:0}
.mission-waves .wave:nth-child(1){width:30%;height:30%;animation:waveOut 6s ease-out infinite}
.mission-waves .wave:nth-child(2){width:30%;height:30%;animation:waveOut 6s ease-out infinite 2s}
.mission-waves .wave:nth-child(3){width:30%;height:30%;animation:waveOut 6s ease-out infinite 4s}

@keyframes waveOut{
  0%{transform:translate(-50%,-50%) scale(.6);opacity:0}
  20%{opacity:.6}
  100%{transform:translate(-50%,-50%) scale(3.2);opacity:0}
}
@keyframes float-q{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-15px)}}
.mission-inner{width:var(--content);margin:0 auto;text-align:center;position:relative;display:flex;flex-direction:column;align-items:center;gap:28px}
.mission-eyebrow{display:inline-block;padding:8px 20px;font-size:11px;letter-spacing:.32em;font-weight:700;color:var(--gold);border:1px solid rgba(226,178,123,.4);border-radius:24px;margin:0;position:relative;overflow:hidden}
.mission-eyebrow::before{content:none}
.mission-headline{font:500 clamp(38px,5.4vw,72px)/1.18 var(--display);letter-spacing:.04em;margin:0;color:#fff;position:relative;display:inline-block;padding-bottom:0}
.mission-headline::after{content:"";display:block;width:60px;height:2px;background:var(--accent);margin:24px auto 0}
.mission-divider{display:flex;align-items:center;justify-content:center;gap:14px;margin:0;width:auto}
.mission-divider span{display:block;width:48px;height:1px;background:rgba(226,178,123,.5)}
.mission-divider i{display:block;width:8px;height:8px;background:var(--accent);transform:rotate(45deg)}
.mission-quote{font:400 clamp(17px,1.8vw,22px)/1.85 var(--display);color:rgba(255,255,255,.92);max-width:760px;margin:0;letter-spacing:.04em}
.mission-quote .hl{color:var(--gold);font-weight:500;padding:0 2px}
.mission-closing{font:500 clamp(20px,2.4vw,32px)/1.4 var(--display);color:var(--gold);letter-spacing:.16em;margin:0;position:relative;display:inline-block;padding:0 24px}
.mission-closing::before,.mission-closing::after{content:"";position:absolute;top:50%;width:12px;height:1px;background:var(--accent)}
.mission-closing::before{left:-16px}
.mission-closing::after{right:-16px}

/* ===== Responsive ===== */
@media(max-width:1080px){
  .product-grid,.catalog{grid-template-columns:repeat(3,1fr)}
  .scenes{grid-template-columns:repeat(3,1fr)}
  .stats,.cert-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:32px}
  .stat+ .stat,.cert+ .cert{border-left:0;padding-left:0;margin-top:0;padding-top:0;border-top:0}
  .stat,.cert{padding:20px 18px;text-align:left;display:flex;flex-direction:column;justify-content:center;min-height:96px;box-sizing:border-box}
  .cert strong{font-size:22px;line-height:38px;height:38px;margin-bottom:4px;display:flex;align-items:flex-start;letter-spacing:.02em}
  .cert span{font-size:12px;line-height:1.5}
  .timeline,.process,.milestones,.values,.downloads{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:850px){
  :root{--content:min(100% - 28px,1180px)}
  .site-header{height:64px}
  .brand{font-size:14px;gap:8px}
  .brand img{height:40px;width:auto}
  .brand small{font-size:9px;padding-top:14px}
  .menu-toggle{display:flex;align-items:center;justify-content:center;padding:6px;width:40px;height:40px}
  .menu-toggle .icon{width:22px;height:22px}
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#ffffff;box-shadow:0 12px 20px rgba(0,0,0,.08);padding:10px 18px;flex-direction:column;align-items:stretch;gap:0;z-index:51}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .main-nav a::after{display:none}
  .main-nav a.active{color:var(--accent)}
  .nav-overlay{display:none;position:fixed;inset:72px 0 0;background:rgba(15,38,34,.5);backdrop-filter:blur(2px);z-index:49;animation:fadeIn .25s ease}
  .nav-overlay.open{display:block}
  @keyframes fadeIn{from{opacity:0}to{opacity:1}}
  .hero{min-height:520px;align-items:center}
  .hero-content{padding:100px 0 56px}
  .scroll-hint{display:none}
  .hero h1{font-size:clamp(34px,8vw,52px);line-height:1.18;margin:16px 0 14px}
  .hero p{font-size:15px;line-height:1.65;margin:0 0 24px}
  .hero .button-row{gap:10px;margin-top:0;flex-direction:column;align-items:stretch;width:100%;max-width:280px}
  .hero .button{min-height:46px;padding:0 20px;font-size:14px;width:100%}
  .section{padding:56px 0}
  .section-head{display:block;margin-bottom:24px}
  .section-intro{margin-top:12px;font-size:14px}
  .kicker{font-size:10px;letter-spacing:.26em}
  .split{grid-template-columns:1fr;gap:28px}
  .split-media img{aspect-ratio:16/9;height:auto}
  .product-grid,.catalog{grid-template-columns:repeat(2,1fr);gap:14px}
  .product-card{min-height:0}
  .product-card img{height:170px}
  .product-card div{padding:16px}
  .product-card h3{font-size:18px}
  .product-card p{font-size:12px}
  .scenes{grid-template-columns:repeat(2,1fr);gap:12px}
  .scene{height:200px;border-radius:6px}
  .scene span{font-size:15px;left:14px;bottom:14px}
  .case-grid{grid-template-columns:1fr;gap:16px}
  .case{height:300px}
  .timeline,.process,.milestones,.values,.downloads,.cert-grid{grid-template-columns:1fr 1fr;gap:10px}
  .cert{padding:20px 18px;text-align:left;display:flex;flex-direction:column;justify-content:center;min-height:96px;box-sizing:border-box;border-radius:4px}
  .cert strong{display:flex;align-items:flex-start;font-size:22px;line-height:38px;height:38px;margin:0 0 4px;letter-spacing:.02em;font-weight:500}
  .cert sup{font-size:.55em;line-height:0;vertical-align:baseline;position:relative;top:-.55em;margin-left:1px}
  .cert span{display:block;font-size:12px;line-height:1.45;word-break:break-word;color:#c5d3ce}
  .cert+.cert{margin-top:0;padding-top:20px;border-top:1px solid rgba(255,255,255,.15)}
  .stats{grid-template-columns:1fr 1fr;gap:18px}
  .stat+ .stat{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.25);margin-top:18px;padding-top:18px}
  .stat{padding:18px 0;min-width:0}
  .stat strong{font-size:28px;line-height:1.15}
  .stat span{font-size:12px;line-height:1.5;margin-top:4px}
  .stat--tag strong{font-size:14px;padding:4px 8px}
  .step{padding:22px 18px}
  .step-num{font-size:28px;margin-bottom:8px}
  .step h3{font-size:17px}
  .form-grid{grid-template-columns:1fr;gap:14px}
  .field.full{grid-column:auto}
  .contact-layout{grid-template-columns:1fr;gap:0}
  .contact-info,.contact-form{padding:28px 18px}
  .map-layout{grid-template-columns:1fr;gap:16px}
  .map-info{padding:24px 18px}
  .map-container{min-height:340px}
  .map-actions .button{width:100%}
  .footer-inner{grid-template-columns:1fr;gap:30px;padding:36px 0 18px}
  .footer-col h4{font-size:13px;margin-bottom:12px}
  .footer-brand{font-size:22px}
  .footer-brand small{font-size:9px}
  .page-hero{height:300px}
  .page-hero .inner{padding-bottom:40px}
  .page-hero h1{font-size:clamp(32px,7vw,46px)}
  .product-detail,.case-detail{grid-template-columns:1fr;gap:24px}
  .product-gallery,.case-meta{position:static}
  .cta-box{padding:48px 22px}
  .cta-box .button{font-size:14px;padding:13px 26px}
  .cert-carousel{padding:0 12px}
  .cert-nav{width:36px;height:36px;font-size:22px}
  .cert-thumb{width:60px;height:44px}
  .cert-lightbox-nav{width:44px;height:44px;font-size:24px}
  .cert-lightbox-prev{left:12px}
  .cert-lightbox-next{right:12px}
  .cert-lightbox-close{top:14px;right:14px}
  .product-switcher{right:10px;bottom:74px}
  .pswitch-toggle-label{display:none}
  .pswitch-toggle{padding:10px;width:42px;height:42px;justify-content:center}
  .pswitch-panel{width:calc(100vw - 20px);right:-10px;max-height:65vh}
  .factory-pano{padding:60px 16px}
  .factory-pano-inner{grid-template-columns:1fr;gap:28px}
  .factory-pano-stats{grid-template-columns:1fr 1fr;gap:14px 12px;padding:20px 16px}
  .fps-item{padding-left:12px}
  .fps-item strong{font-size:24px}
  .fps-item span{font-size:11px}
  .factory-gallery{padding:36px 14px}
  .fg-grid{flex-wrap:wrap;gap:10px}
  .fg-item{flex:0 0 calc(50% - 5px);min-width:calc(50% - 5px)}
  .mission-block{padding:64px 16px}
  .mission-inner{gap:18px}
  .mission-block::after{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:200px;height:200px;background:url(logo.png) center/contain no-repeat;opacity:.08;pointer-events:none;z-index:0;filter:brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(355deg)}
  .mission-eyebrow{font-size:10px;padding:7px 16px}
  .mission-eyebrow::before{background-size:auto 70%}
  .mission-headline{font-size:24px;line-height:1.4}
  .arrow-link{font-size:13px}
  .back-to-top{width:40px;height:40px;font-size:18px;right:16px;bottom:16px}
  /* 暗色渐变蒙版在 mobile 加深，否则白字看不见 */
  .hero::after{background:linear-gradient(180deg,rgba(7,22,20,.55) 0%,rgba(7,22,20,.82) 100%)}
  .product-card::before{height:2px}
  .step::after{height:2px}
  /* Factory pano bg-deco 隐藏（mobile 装饰过剩）*/
  .factory-pano .bg-deco{display:none}
}
@media(max-width:650px){
  .fg-grid{flex-wrap:wrap}
  .fg-item{flex:0 0 calc(50% - 8px);min-width:calc(50% - 8px)}
}
@media(max-width:500px){
  :root{--content:min(100% - 32px,1180px)}
  .product-grid,.catalog{grid-template-columns:1fr;gap:16px}
  .scenes{grid-template-columns:1fr;gap:12px}
  .scene{height:200px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .hero{padding:0 16px}
  .hero-content{padding:90px 0 40px}
  .hero h1{font-size:30px;line-height:1.2;margin:14px 0 12px}
  .hero p{font-size:14px;line-height:1.7;margin:0 0 24px}
  .hero .button-row{width:100%;max-width:100%}
  .hero .button{min-height:46px;padding:0 18px;font-size:14px}
  .title{font-size:24px}
  .section{padding:48px 0}
  .section-head{margin-bottom:20px}
  .section-intro{font-size:14px;line-height:1.7}
  .split{gap:24px}
  .timeline,.process,.milestones,.values,.downloads,.cert-grid{grid-template-columns:1fr;gap:12px}
  .downloads,.cert-grid{gap:8px}
  .cert{padding:18px 14px;min-height:88px;display:flex;flex-direction:column;justify-content:center}
  .cert strong{font-size:22px;line-height:38px;height:38px;margin:0 0 4px}
  .cert sup{font-size:.55em;top:-.55em}
  .cert span{font-size:12px}
  .cert+.cert{padding-top:18px}
  .button-row{justify-content:center;gap:12px}
  .button{min-height:44px;padding:0 18px;font-size:13px}
  .factory-pano-stats{grid-template-columns:1fr 1fr;gap:14px;padding:18px 14px}
  .mission-block::after{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:200px;height:200px;background:url(logo.png) center/contain no-repeat;opacity:.08;pointer-events:none;z-index:0;filter:brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(355deg)}
  .mission-eyebrow{font-size:10px;padding:6px 14px}
  .mission-eyebrow::before{background-size:auto 65%}
  .mission-block{padding:56px 16px}
  .watermark-cta{font-size:80px}
  .stats{grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
  .stat{padding:12px 0}
  .stat strong{font-size:22px}
  .stat span{font-size:11px;line-height:1.45}
  .footer-brand{font-size:20px}
  .watermark{font-size:120px}
  .factory-pano{padding:40px 14px}
  .cta-box{padding:40px 20px}
  .cta-box .title{font-size:22px;margin-bottom:10px}
  .cta-box p{font-size:14px;margin-bottom:20px}
  .cta-box .button{padding:12px 24px;font-size:14px}
  .copy{font-size:14px;line-height:1.75}
  .lead{font-size:15px;line-height:1.7}
  .page-hero h1{font-size:28px;line-height:1.2}
  .page-hero p{font-size:14px}
  .page-hero .inner{padding-bottom:48px}
  .product-card img{height:180px}
  .product-card div{padding:16px}
  .product-card h3{font-size:18px;margin:0 0 6px}
  .product-card p{font-size:13px;line-height:1.6}
  .case-meta-list li{padding:10px 0;font-size:13px}
  .field{padding:0 0 12px}
  .field label{font-size:11px;margin-bottom:4px}
  .field input,.field select,.field textarea{padding:9px 12px;font-size:14px}
  .button.form-submit{width:100%;min-height:48px}
  .spec-list li{padding:8px 0;font-size:12px;flex-direction:column;align-items:flex-start;gap:4px}
  .spec-list li strong{min-width:0;font-size:12px}
  .spec-list li span{font-size:12px;line-height:1.6}
  .eyebrow{font-size:10px;gap:8px}
  .eyebrow::before{width:24px}
  .lang-switcher{margin-left:8px}
  .lang-switcher button{padding:5px 8px;font-size:12px;min-width:28px}
  .copyright{font-size:11px;padding:14px 0}
  .back-to-top{width:40px;height:40px;right:16px;bottom:16px}
  .breadcrumb{font-size:11px;margin-bottom:12px}
  .scroll-hint{display:none}
}

/* ===== Print ===== */
@media print{
  .site-header,.site-footer,.back-to-top,.menu-toggle,.cert-carousel,.product-switcher,.mission-block{display:none}
}

/* ============================================================================
   v66 Bilingual Support (中英双语)
   ============================================================================ */

/* 默认中文模式：隐藏英文 */
body .en { display: none !important; }

/* 英文模式：隐藏中文（支持 html 和 body 双重触发）*/
html.lang-en .zh { display: none !important; }
html.lang-en .en { display: inline !important; }
body.lang-en .zh { display: none !important; }
body.lang-en .en { display: inline !important; }

/* 部分 inline 块元素需要变回 inline-block */
body.lang-en .en.block,
body.lang-en p .en,
body.lang-en div .en,
html.lang-en .en.block,
html.lang-en p .en,
html.lang-en div .en { display: inline-block !important; }
body.lang-en h1 .en,
body.lang-en h2 .en,
body.lang-en h3 .en,
body.lang-en h4 .en,
body.lang-en h5 .en,
html.lang-en h1 .en,
html.lang-en h2 .en,
html.lang-en h3 .en,
html.lang-en h4 .en,
html.lang-en h5 .en { display: inline !important; }

/* 语言切换器 */
.lang-switcher {
  display: inline-flex;
  align-items: flex-end;
  gap: 0;
  margin-left: 16px;
  padding: 0 0 16px;
  background: transparent;
  border-radius: 0;
  border: none;
  user-select: none;
}
.lang-switcher button {
  background: transparent;
  border: none;
  color: rgba(22,59,54,0.55);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s ease;
  font-family: inherit;
  min-width: 32px;
}
.lang-switcher button:hover {
  color: #163b36;
  background: rgba(22,59,54,0.05);
}
.lang-switcher button.active {
  background: transparent;
  color: #163b36;
  font-weight: 700;
  position: relative;
}
.lang-switcher button.active::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 2px;
  height: 2px;
  background: #c9a76a;
  border-radius: 1px;
}
.lang-switcher .lang-divider {
  color: rgba(22,59,54,0.2);
  font-size: 12px;
  user-select: none;
  padding: 0 1px;
  font-weight: 300;
}

/* 英文模式下英文数字字体微调 */
body.lang-en {
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
}

/* 移动端 lang switcher */
@media (max-width: 650px) {
  .lang-switcher {
    margin-left: auto;
    margin-right: 12px;
    padding: 3px 3px;
  }
  .lang-switcher button {
    padding: 4px 10px;
    font-size: 12px;
    min-width: 30px;
  }
}

/* 大屏 (>=1280px) - aspect-ratio 16/9 让视频完全 fill hero,无空白 */
@media (min-width: 1280px) {
  .hero { aspect-ratio: 16/9; min-height: auto; }
}

/* ===== 移动端头部修正（2026-11-11）：防止 logo 文字与语言切换、菜单按钮重叠 ===== */
@media (max-width: 850px) {
  .nav-wrap { align-items: center; padding: 0 16px; gap: 8px; }
  .brand { padding: 0; height: auto; align-items: center; min-width: 0; flex: 0 1 auto; }
  .brand img { height: 36px; }
  .brand-text { padding: 0; min-width: 0; overflow: hidden; align-self: center; }
  .brand small { padding-top: 0; font-size: 9px; letter-spacing: .12em; }
  .lang-switcher { order: 2; margin: 0 0 0 auto; padding: 0; align-items: center; flex: none; }
  .menu-toggle { order: 3; flex: none; }
  .main-nav { top: 64px; }
  .nav-overlay { inset: 64px 0 0; }
}
@media (max-width: 520px) {
  .brand-text { display: none; }
  .lang-switcher button { padding: 4px 8px; min-width: 28px; }
}