/* ============ Ronghai Aquatic — v13 暗黑模版（客户原稿设计语言） ============ */
:root{
  --bg:#0a0c0e;          /* v13 主底 */
  --bg2:#0e1114;
  --panel:#12161a;
  --line:rgba(255,255,255,.09);
  --grid:rgba(255,255,255,.04);
  --acc:#ff4d00;         /* v13 橙红 */
  --acc-d:#e64500;
  --txt:#ffffff;
  --txt2:#a3b1c0;
  --txt3:#8a97a3;
  --mega:'Bebas Neue','Oswald','Arial Narrow',system-ui,sans-serif;
  --head:'Oswald','Arial Narrow','Noto Sans SC',system-ui,sans-serif;
  --body:'Inter','Segoe UI','Noto Sans SC',system-ui,sans-serif;
  /* 兼容旧变量名（组件沿用） */
  --navy:#ffffff; --navy-d:#0a0c0e; --blue:#ff4d00; --blue-l:#ff7a40;
  --ice:#12161a; --ink:#e8edf2; --grey:#a3b1c0; --accent:#ff4d00; --white:#0a0c0e;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--txt2);background:var(--bg);line-height:1.75;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 40px}

h1,h2,h3,h4{font-family:var(--head);font-weight:600;line-height:1.15;color:var(--txt)}
.sec{padding:110px 0;position:relative}
.sec-alt{background:var(--bg2)}
/* v13 细网格背景 */
.sec::before,.v-stats::before{content:'';position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:80px 80px;mask-image:linear-gradient(rgba(0,0,0,.5),rgba(0,0,0,.18))}
.sec>.container{position:relative;z-index:1}

/* — 区块引导（v13 标志性） */
.sec-head{max-width:none;margin:0 0 56px;text-align:left}
.sec-head .kicker,.kicker{display:inline-block;font-family:var(--head);font-size:13px;letter-spacing:.3em;text-transform:uppercase;color:var(--acc);margin-bottom:18px}
.sec-head .kicker::before,.kicker::before{content:'— '}
.sec-head h2{font-size:56px;text-transform:uppercase;letter-spacing:.02em;line-height:1.05}
.sec-head p{color:var(--txt2);margin-top:18px;max-width:760px}

.btn{display:inline-block;font-family:var(--head);text-transform:uppercase;letter-spacing:.14em;font-size:14px;padding:15px 36px;border:1px solid rgba(255,255,255,.3);color:var(--txt);transition:.25s;cursor:pointer;background:transparent}
.btn:hover{border-color:var(--acc);color:var(--acc)}
.btn-solid{background:var(--acc);border-color:var(--acc);color:#fff}
.btn-solid:hover{background:var(--acc-d);border-color:var(--acc-d);color:#fff}
.btn-white{border-color:rgba(255,255,255,.45);color:#fff}
.btn-white:hover{background:var(--acc);border-color:var(--acc);color:#fff}

/* ---------- top bar（信息条，暗化收窄） ---------- */
.topbar{background:#000;color:var(--txt3);font-size:12.5px;border-bottom:1px solid var(--line)}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:34px}
.topbar a{color:var(--txt2)}
.topbar a:hover{color:var(--acc)}
.topbar .tb-l span{margin-right:22px}
.topbar .tb-r{letter-spacing:.1em;font-size:11px;text-transform:uppercase}

/* ---------- nav（v13：黑底 wordmark + 细字导航 + EN 方框） ---------- */
.navbar{background:transparent;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}
.navbar::before{content:'';position:absolute;inset:0;z-index:-1;background:rgba(10,12,14,.82);backdrop-filter:saturate(140%) blur(18px);-webkit-backdrop-filter:saturate(140%) blur(18px)}
@supports not (backdrop-filter:blur(1px)){.navbar::before{background:#0a0c0e}}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:38px;width:auto;display:block}
.brand .brand-txt{font-family:var(--head);font-size:20px;font-weight:700;letter-spacing:.18em;color:var(--txt)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links>li{position:relative}
.nav-links>li>a{display:block;font-family:var(--body);font-size:14px;letter-spacing:.04em;padding:25px 15px;color:var(--txt2);transition:.2s}
.nav-links>li>a:hover,.nav-links>li>a.active{color:var(--txt)}
.nav-links>li>a.active{color:var(--acc)}
.dropdown{position:absolute;top:100%;left:0;background:#101418;min-width:250px;border:1px solid var(--line);border-top:2px solid var(--acc);box-shadow:0 18px 44px rgba(0,0,0,.6);opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s}
.nav-links>li:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:12px 20px;font-size:13.5px;color:var(--txt2);border-bottom:1px solid var(--line)}
.dropdown a:last-child{border-bottom:0}
.dropdown a:hover{background:#161b20;color:var(--acc);padding-left:26px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--txt);margin:5px auto;transition:.25s}

/* ---------- 语言切换（v13 EN 方框风） ---------- */
.lang-sw{position:relative;margin-left:10px}
.lang-sw>button{display:flex;align-items:center;gap:6px;background:none;border:1px solid rgba(255,255,255,.28);padding:7px 12px;font-family:var(--head);font-size:12px;letter-spacing:.12em;color:var(--txt);cursor:pointer;text-transform:uppercase;transition:.2s}
.lang-sw>button:hover{border-color:var(--acc);color:var(--acc)}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;background:#101418;border:1px solid var(--line);border-top:2px solid var(--acc);box-shadow:0 18px 44px rgba(0,0,0,.6);min-width:170px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;z-index:120;max-height:70vh;overflow-y:auto}
.lang-sw.open .lang-menu,.lang-sw:hover .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-menu a{display:block;padding:10px 18px;font-size:13px;color:var(--txt2);border-bottom:1px solid var(--line)}
.lang-menu a:hover{background:#161b20;color:var(--acc)}
.lang-menu a.cur{color:var(--acc);font-weight:600}

/* ---------- hero：banner 轮播（替代 v13 地球） ---------- */
.hero{position:relative;height:88vh;min-height:560px;max-height:900px;overflow:hidden;background:var(--bg)}
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.hero .slide.on{opacity:1}
.hero .slide img,.hero .slide video{width:100%;height:100%;object-fit:cover;filter:brightness(.85)}
.hero .slide::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,14,.55) 0%,rgba(10,12,14,.18) 45%,rgba(10,12,14,.88) 100%)}
/* v13 hero：居中构图 */
.hero .caption{position:absolute;z-index:5;top:50%;transform:translateY(-50%);left:0;right:0;text-align:center}
.hero .caption .kicker{font-size:14px;margin-bottom:18px}
.hero .caption h1,.hero .caption .hx{color:#fff;font-family:var(--mega);font-weight:400;font-size:96px;text-transform:uppercase;letter-spacing:.02em;line-height:.98;max-width:980px;margin:0 auto}
html[lang^="zh"] .hero .caption h1,html[lang^="zh"] .hero .caption .hx,
html[lang="ja"] .hero .caption h1,html[lang="ja"] .hero .caption .hx,
html[lang="ko"] .hero .caption h1,html[lang="ko"] .hero .caption .hx{font-family:var(--head);font-weight:700;font-size:64px;line-height:1.12}
.hero .caption p{color:var(--txt2);font-size:17px;max-width:560px;margin:20px auto 32px}
/* v13 品牌 hero：RONGHAI + 荣海水产 + EXPORTING TO 30+ */
.hero .brand-h1{font-family:var(--mega) !important;font-weight:400 !important;font-size:104px !important;line-height:1 !important;letter-spacing:.06em}
.hero .brand-h1 .h1-zh{display:block;font-family:var(--head);font-weight:600;font-size:30px;letter-spacing:.5em;margin-top:10px;text-indent:.5em;color:#fff;position:relative}
.hero .exp-line{font-family:var(--mega);color:#fff;font-size:26px;letter-spacing:.22em;margin-top:22px}
.hero .exp-line b{color:var(--acc);font-weight:400}
@keyframes capIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.hero .caption .kicker,.hero .caption h1,.hero .caption .hx,.hero .caption p,.hero .caption .btn,.hero .caption .exp-line{opacity:0}
.hero .slide.on .caption .kicker{animation:capIn .7s cubic-bezier(.22,.61,.36,1) .15s both}
.hero .slide.on .caption h1,.hero .slide.on .caption .hx{animation:capIn .7s cubic-bezier(.22,.61,.36,1) .3s both}
.hero .slide.on .caption .exp-line{animation:capIn .7s cubic-bezier(.22,.61,.36,1) .45s both}
.hero .slide.on .caption p{animation:capIn .7s cubic-bezier(.22,.61,.36,1) .55s both}
.hero .slide.on .caption .btn{animation:capIn .7s cubic-bezier(.22,.61,.36,1) .65s both}
@media (prefers-reduced-motion: reduce){
  .hero .caption .kicker,.hero .caption h1,.hero .caption .hx,.hero .caption p,.hero .caption .btn,.hero .caption .exp-line{opacity:1;animation:none !important}
}
/* v13 坐标行 + 向下滚动 */
.hero .coords{position:absolute;z-index:6;left:40px;bottom:30px;font-family:var(--head);font-size:12px;letter-spacing:.18em;color:var(--txt3);text-transform:uppercase}
.hero .coords b{color:var(--acc);font-weight:500;margin-right:10px}
.hero .scroll-hint{position:absolute;z-index:6;left:50%;bottom:26px;transform:translateX(-50%);font-size:11.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--txt3);display:flex;flex-direction:column;align-items:center;gap:8px}
.hero .scroll-hint::after{content:'';width:1px;height:34px;background:linear-gradient(var(--acc),transparent);animation:shint 2s ease-in-out infinite}
@keyframes shint{0%,100%{opacity:.3}50%{opacity:1}}
.hero .dots{position:absolute;z-index:6;right:40px;bottom:30px;display:flex;gap:10px}
.hero .dots button{width:34px;height:3px;border:0;background:rgba(255,255,255,.25);cursor:pointer;transition:.25s}
.hero .dots button.on{background:var(--acc)}

/* ---------- v13 关于：split 文字+编号特性 | 图 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:70px;align-items:start}
.split .sp-img{overflow:hidden;position:relative}
.split .sp-img img{width:100%;height:100%;object-fit:cover;filter:saturate(.92)}
.split .sp-img .tag{position:absolute;left:0;bottom:0;background:var(--acc);color:#fff;font-family:var(--head);padding:12px 22px;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.split h2{font-size:56px;text-transform:uppercase;margin:6px 0 26px;line-height:1.08}
.split p{color:var(--txt2);margin-bottom:16px;font-size:15.5px}
.feat-list{margin:34px 0 0}
.feat-list li{display:flex;gap:18px;padding:16px 0;border-top:1px solid var(--line)}
.feat-list .fl-n{font-family:var(--mega);color:var(--acc);font-size:20px;min-width:40px;padding-top:2px}
.feat-list b{display:block;color:var(--txt);font-size:16px;font-family:var(--head);letter-spacing:.04em}
.feat-list span{color:var(--txt3);font-size:13.5px}

/* ---------- v13 企业实力：超大数字行 ---------- */
.v-stats{position:relative;padding:110px 0;background:var(--bg)}
.v-stats .container{position:relative;z-index:1}
.v-stats .vs-intro{max-width:880px;color:var(--txt2);margin-bottom:70px;font-size:16.5px}
.vs-row{display:flex;align-items:baseline;gap:34px;padding:34px 0;border-bottom:1px solid var(--line)}
.vs-row:first-of-type{border-top:1px solid var(--line)}
.vs-row .vs-i{font-family:var(--head);color:var(--acc);font-size:14px;letter-spacing:.1em;min-width:44px}
.vs-row b{font-family:var(--mega);font-weight:400;font-size:104px;line-height:.9;color:var(--txt);letter-spacing:.01em}
.vs-row b sup{font-size:40px;vertical-align:super}
.vs-row .vs-l{display:flex;flex-direction:column;gap:2px}
.vs-row .vs-l i{font-style:normal;color:var(--txt);font-size:17px;font-weight:600}
.vs-row .vs-l em{font-style:normal;font-family:var(--head);color:var(--txt3);font-size:12px;letter-spacing:.22em;text-transform:uppercase}

/* ---------- v13 资质认证 strip ---------- */
.certs{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-start}
.cert{border:1px solid var(--line);padding:18px 28px;text-align:center;background:transparent;transition:.25s}
.cert:hover{border-color:var(--acc)}
.cert b{font-family:var(--head);font-size:15px;color:var(--txt);display:block;letter-spacing:.14em;text-transform:uppercase;font-weight:500}
.cert span{font-size:11px;color:var(--txt3);letter-spacing:.12em;text-transform:uppercase}

/* ---------- v13 产品中心：tabs + 编号列表 ---------- */
.v-tabs{display:flex;gap:34px;border-bottom:1px solid var(--line);margin-bottom:54px;flex-wrap:wrap}
.v-tabs button{background:none;border:0;color:var(--txt3);font-family:var(--body);font-size:15px;padding:14px 2px;cursor:pointer;position:relative;letter-spacing:.04em;transition:.2s}
.v-tabs button:hover{color:var(--txt)}
.v-tabs button.on{color:var(--txt)}
.v-tabs button.on::after{content:'';position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--acc)}
.v-prod{display:grid;grid-template-columns:1fr 1.35fr;gap:60px;align-items:start}
.v-prod .vp-img{position:relative;overflow:hidden;aspect-ratio:4/5;background:var(--panel)}
.v-prod .vp-img img{width:100%;height:100%;object-fit:cover;transition:.6s}
.v-prod .vp-img:hover img{transform:scale(1.04)}
.v-prod .vp-img figcaption{position:absolute;left:0;bottom:0;background:rgba(10,12,14,.82);color:var(--txt);font-family:var(--head);padding:12px 22px;font-size:14px;letter-spacing:.14em}
.v-plist{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.v-plist a{display:block;padding:17px 0;border-bottom:1px solid var(--line);transition:.2s}
.v-plist a:hover .vp-name{color:var(--acc)}
.v-plist .vp-n{font-family:var(--mega);color:var(--acc);font-size:15px;margin-right:12px}
.v-plist .vp-name{color:var(--txt);font-size:16.5px;font-weight:600;transition:.2s}
.v-plist .vp-sub{display:block;color:var(--txt3);font-size:12.5px;margin-top:3px;padding-left:30px}
.v-pcta{margin-top:64px;border:1px solid var(--line);padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.v-pcta b{color:var(--txt);font-size:20px;font-family:var(--head);letter-spacing:.04em}
.v-pcta p{color:var(--txt3);font-size:14px;margin-top:4px}

/* ---------- v13 GALLERY masonry ---------- */
.v-gal{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.v-gal figure{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--panel)}
.v-gal figure.wide{grid-column:span 2;aspect-ratio:21/8}
.v-gal img,.v-gal video{width:100%;height:100%;object-fit:cover;transition:.6s;filter:saturate(.95)}
.v-gal figure:hover img{transform:scale(1.05)}
.v-gal figcaption{position:absolute;left:0;bottom:0;padding:34px 18px 14px;right:0;background:linear-gradient(transparent,rgba(0,0,0,.78));color:var(--txt);font-family:var(--head);font-size:12.5px;letter-spacing:.2em;text-transform:uppercase}
.mega-title{font-family:var(--mega);font-weight:400;font-size:96px;line-height:.95;color:var(--txt);text-transform:uppercase;letter-spacing:.02em;margin:4px 0 50px}
html[lang^="zh"] .mega-title,html[lang="ja"] .mega-title,html[lang="ko"] .mega-title{font-family:var(--head);font-weight:700;font-size:62px;line-height:1.1}

/* ---------- v13 联系（下划线表单） ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:80px;align-items:start}
.c-info li{display:flex;flex-direction:column;gap:4px;margin-bottom:26px;border:0}
.c-info .ci-ic{display:none}
.c-info b{font-family:var(--body);font-weight:400;letter-spacing:.05em;color:var(--txt3);font-size:13px}
.c-info span,.c-info a{color:var(--txt);font-size:16px}
.c-info a:hover{color:var(--acc)}
.form{background:transparent;border:0;padding:0}
.form h3{font-size:26px;text-transform:uppercase;margin-bottom:8px;color:var(--txt)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.form label{display:block;font-size:13px;color:var(--txt3);margin:26px 0 2px}
.form input,.form select,.form textarea{width:100%;border:0;border-bottom:1px solid rgba(255,255,255,.25);background:transparent;padding:10px 2px;font-family:var(--body);font-size:15px;color:var(--txt);outline:none;transition:.25s;border-radius:0}
.form select{color:var(--txt)}
.form select option{background:#12161a;color:#fff}
.form input:focus,.form select:focus,.form textarea:focus{border-bottom-color:var(--acc)}
.form-note{display:none;margin-top:22px;background:var(--panel);border:1px solid var(--line);border-left:2px solid var(--acc);padding:16px 18px;font-size:14px;color:var(--txt2);animation:fnote .45s cubic-bezier(.22,.61,.36,1)}
.form-note.on{display:block}
@keyframes fnote{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.form-note b{color:var(--txt)}
.form-note .fn-row{display:flex;align-items:center;gap:10px;margin-top:10px;flex-wrap:wrap}
.form-note code{background:#0a0c0e;border:1px solid var(--line);padding:6px 10px;font-size:13px;color:var(--txt)}
.form-note .fn-copy{font-family:var(--head);font-size:12px;letter-spacing:.1em;text-transform:uppercase;background:var(--acc);color:#fff;border:0;padding:8px 14px;cursor:pointer;transition:.2s}
.form-note .fn-copy:hover{background:var(--acc-d)}

/* ---------- 位置卡片 ---------- */
.loc-card{margin-top:80px;overflow:hidden;background:linear-gradient(rgba(10,12,14,.82),rgba(10,12,14,.82)),url('../images/earth-texture.jpg') center 35%/cover;color:#fff;padding:70px 50px;text-align:center;border:1px solid var(--line)}
.loc-card .lc-kicker{font-family:var(--head);font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--acc);margin-bottom:10px}
.loc-card h3{color:#fff;font-size:44px;font-family:var(--mega);font-weight:400;letter-spacing:.04em}
.loc-card p{color:var(--txt2);margin:14px auto 26px;max-width:520px}

/* ---------- 页面 hero（子页，扁平黑） ---------- */
.page-hero{background:var(--bg2);border-bottom:1px solid var(--line);padding:84px 0 56px;color:#fff;text-align:left;position:relative}
.page-hero::before{content:'';position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:80px 80px}
.page-hero .container{position:relative}
.page-hero h1,.page-hero .ph-t{color:#fff;font-family:var(--mega);font-weight:400;font-size:72px;text-transform:uppercase;letter-spacing:.03em;line-height:1}
html[lang^="zh"] .page-hero h1,html[lang^="zh"] .page-hero .ph-t,
html[lang="ja"] .page-hero h1,html[lang="ja"] .page-hero .ph-t,
html[lang="ko"] .page-hero h1,html[lang="ko"] .page-hero .ph-t{font-family:var(--head);font-weight:700;font-size:52px}
.page-hero .crumb{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--txt3);margin-top:14px}
.page-hero .crumb a:hover{color:var(--acc)}

/* ---------- 产品卡（子页目录，暗面板） ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-grid.cols3{grid-template-columns:repeat(3,1fr)}
.prod-card{background:var(--panel);border:1px solid var(--line);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.prod-card:hover{border-color:rgba(255,77,0,.55);transform:translateY(-4px)}
.prod-card .pc-img{aspect-ratio:4/3;overflow:hidden;background:#0e1114}
.prod-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.prod-card:hover .pc-img img{transform:scale(1.06)}
.prod-card .pc-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.prod-card .pc-cat{font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--acc);margin-bottom:6px}
.prod-card h3{font-size:17px;letter-spacing:.03em;color:var(--txt)}
.prod-card .pc-zh{font-size:13px;color:var(--txt3);margin-top:2px}
.prod-card .pc-more{margin-top:auto;padding-top:14px;font-family:var(--head);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--txt3)}
.prod-card:hover .pc-more{color:var(--acc)}

/* ---------- 分类卡（首页不再用，分类页头可用） ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.cat-card{position:relative;display:block;overflow:hidden;aspect-ratio:3/4;background:var(--panel);border:1px solid var(--line)}
.cat-card img{width:100%;height:100%;object-fit:cover;transition:.5s;filter:saturate(.92)}
.cat-card:hover img{transform:scale(1.07);opacity:.8}
.cat-card .cc-txt{position:absolute;left:0;right:0;bottom:0;padding:70px 18px 18px;background:linear-gradient(transparent,rgba(0,0,0,.9));color:#fff}
.cat-card .cc-txt h3{color:#fff;font-size:18px;text-transform:uppercase;letter-spacing:.06em}
.cat-card .cc-txt span{font-size:12px;color:var(--txt3);letter-spacing:.1em}
.cat-card .cc-arrow{position:absolute;top:14px;right:14px;width:34px;height:34px;border:1px solid rgba(255,255,255,.5);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;opacity:0;transition:.3s}
.cat-card:hover .cc-arrow{opacity:1;border-color:var(--acc);color:var(--acc)}

/* ---------- 产品布局/侧栏 ---------- */
.prod-layout{display:grid;grid-template-columns:260px 1fr;gap:44px;align-items:start}
.side-nav{border:1px solid var(--line);overflow:hidden;position:sticky;top:96px;background:var(--panel)}
.side-nav h3{background:#000;color:var(--txt);font-size:14px;letter-spacing:.16em;text-transform:uppercase;padding:16px 20px;border-bottom:1px solid var(--line)}
.side-nav a{display:block;padding:13px 20px;border-bottom:1px solid var(--line);font-size:14px;color:var(--txt2);transition:.2s}
.side-nav a:last-child{border-bottom:0}
.side-nav a:hover,.side-nav a.on{background:#161b20;color:var(--acc)}
.side-cta{margin-top:20px;background:var(--panel);border:1px solid var(--line);padding:24px;text-align:center}
.side-cta b{font-family:var(--head);color:var(--txt);display:block;font-size:16px;margin-bottom:8px;text-transform:uppercase;letter-spacing:.06em}
.side-cta p{font-size:13px;color:var(--txt3);margin-bottom:14px}

/* ---------- 产品详情 ---------- */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.pd-img{border:1px solid var(--line);overflow:hidden;background:var(--panel)}
.pd-img img{width:100%;aspect-ratio:1;object-fit:cover;cursor:zoom-in}
.pd .pd-cat{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--acc)}
.pd h1{font-size:40px;text-transform:uppercase;margin:8px 0 4px;color:var(--txt)}
.pd .pd-zh{color:var(--txt2);font-size:17px}
.pd .pd-latin{font-style:italic;color:var(--txt3);font-size:14px;margin:6px 0 18px}
.pd .pd-desc{color:var(--txt2);margin-bottom:24px}
.pd-thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:10px}
.pd-thumbs img{aspect-ratio:1;object-fit:cover;border:1px solid var(--line);cursor:pointer;transition:.2s}
.pd-thumbs img:hover,.pd-thumbs img.cur{border-color:var(--acc)}
.spec{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:28px}
.spec th,.spec td{border:1px solid var(--line);padding:11px 16px;text-align:left}
.spec th{background:var(--panel);font-family:var(--head);letter-spacing:.1em;text-transform:uppercase;font-size:12px;color:var(--txt);width:38%;font-weight:500}
.spec td{color:var(--txt2)}
.pd-note{font-size:13px;color:var(--txt3);background:var(--panel);border-left:2px solid var(--acc);padding:12px 16px;margin-bottom:26px}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.95);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .32s ease,visibility .32s}
.lightbox.on{opacity:1;visibility:visible}
.lightbox img{max-width:92vw;max-height:88vh;object-fit:contain;transform:scale(.96);transition:transform .32s cubic-bezier(.22,.61,.36,1);cursor:zoom-out}
.lightbox.on img{transform:none}
.lightbox .lb-close{position:absolute;top:14px;right:18px;width:44px;height:44px;color:#fff;font-size:26px;line-height:1;background:rgba(255,255,255,.08);border:0;border-radius:50%;cursor:pointer;transition:.2s}
.lightbox .lb-close:hover{background:var(--acc)}

/* ---------- 关于页 ---------- */
.about-body p{color:var(--txt2);margin-bottom:16px;font-size:16px}
.timeline{margin-top:30px}
.timeline li{display:flex;gap:22px;padding-bottom:26px;position:relative}
.timeline li::before{content:'';position:absolute;left:64px;top:8px;bottom:-4px;width:1px;background:var(--line)}
.timeline li:last-child::before{display:none}
.timeline .tl-y{font-family:var(--mega);font-size:20px;color:var(--acc);min-width:54px}
.timeline .tl-dot{width:8px;height:8px;border-radius:50%;background:var(--acc);margin-top:10px;position:relative;z-index:2;flex-shrink:0}
.timeline b{color:var(--txt)}
.timeline p{font-size:14px;color:var(--txt3)}
.ribbon{background:var(--bg2);color:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ribbon .container{display:grid;grid-template-columns:repeat(5,1fr);text-align:center}
.ribbon .cell{padding:36px 10px;border-right:1px solid var(--line)}
.ribbon .cell:last-child{border-right:0}
.ribbon b{font-family:var(--mega);font-weight:400;font-size:42px;display:block;color:var(--txt)}
.ribbon span{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--txt3)}
.cert-flex{display:grid;grid-template-columns:300px 1fr;gap:44px;align-items:center}
.cert-flex img{border:1px solid var(--line)}

/* ---------- 视频 ---------- */
.video-band{background:#000;padding:110px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.video-band .sec-head h2{color:#fff}
.video-band .sec-head p{color:var(--txt2)}
.video-frame{max-width:960px;margin:0 auto;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 80px rgba(0,0,0,.6)}
.video-frame video{display:block;width:100%}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{border:1px solid var(--line);overflow:hidden;background:var(--panel);transition:.3s;display:flex;flex-direction:column}
.news-card:hover{border-color:rgba(255,77,0,.55);transform:translateY(-4px)}
.news-card .nc-img{aspect-ratio:16/10;overflow:hidden}
.news-card .nc-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .nc-img img{transform:scale(1.06)}
.news-card .nc-body{padding:22px;flex:1;display:flex;flex-direction:column}
.news-card .nc-date{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--acc);margin-bottom:8px}
.news-card h3{font-size:18px;color:var(--txt)}
.news-card p{font-size:13.5px;color:var(--txt3);margin-top:8px}
.article{max-width:800px;margin:0 auto}
.article .a-date{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--acc)}
.article h1{font-size:36px;margin:8px 0 24px;color:var(--txt)}
.article img{margin:22px 0;border:1px solid var(--line)}
.article p{color:var(--txt2);margin-bottom:16px}

/* ---------- 招聘 ---------- */
.job{border:1px solid var(--line);padding:26px 30px;margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;gap:20px;transition:.25s;background:var(--panel)}
.job:hover{border-color:rgba(255,77,0,.55)}
.job h3{font-size:19px;color:var(--txt)}
.job .j-meta{font-size:13px;color:var(--txt3);margin-top:6px}
.job .j-meta span{margin-right:18px}

/* ---------- CTA 带 ---------- */
.cta-band{background:linear-gradient(rgba(10,12,14,.88),rgba(10,12,14,.88)),url('../images/packaging.jpg') center/cover;color:#fff;text-align:left;padding:110px 0;border-top:1px solid var(--line)}
.cta-band h2{color:#fff;font-size:52px;text-transform:uppercase;line-height:1.08}
.cta-band p{color:var(--txt2);max-width:560px;margin:18px 0 32px}

/* ---------- footer（v13 极简） ---------- */
footer{background:#000;color:var(--txt3);border-top:1px solid var(--line)}
.f-main{padding:64px 40px 44px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.f-main h4{color:var(--txt);font-size:13px;letter-spacing:.2em;text-transform:uppercase;margin-bottom:18px;font-weight:500}
.f-main p{font-size:13.5px;line-height:1.8}
.f-main li{margin-bottom:9px}
.f-main a{font-size:13.5px;transition:.2s;color:var(--txt3)}
.f-main a:hover{color:var(--acc)}
.f-brand b{display:block;font-family:var(--head);font-size:22px;color:var(--txt);letter-spacing:.18em}
.f-brand span{font-size:11px;letter-spacing:.3em;color:var(--txt3);text-transform:uppercase}
.f-certline{margin-top:18px;font-size:11.5px;letter-spacing:.06em;color:var(--txt3)}
.f-bottom{border-top:1px solid var(--line);padding:20px 0;font-size:12.5px}
.f-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.f-bottom a:hover{color:var(--acc)}

/* ---------- 产品搜索 ---------- */
.pfilter{position:relative;margin-bottom:26px}
.pfilter input{width:100%;border:1px solid var(--line);background:var(--panel);padding:13px 16px 13px 44px;font-family:var(--body);font-size:15px;color:var(--txt);outline:none;transition:.25s}
.pfilter input::placeholder{color:var(--txt3)}
.pfilter input:focus{border-color:var(--acc)}
.pfilter::before{content:'';position:absolute;left:16px;top:50%;width:16px;height:16px;transform:translateY(-50%);background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238a97a3' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E");pointer-events:none}
.pfilter-empty{display:none;text-align:center;color:var(--txt3);padding:40px 0;font-size:15px}

/* ---------- 移动询盘栏 ---------- */
.pd-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;align-items:center;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(10,12,14,.9);backdrop-filter:saturate(140%) blur(18px);-webkit-backdrop-filter:saturate(140%) blur(18px);border-top:1px solid var(--line);transform:translateY(110%);transition:transform .4s cubic-bezier(.22,.61,.36,1)}
@supports not (backdrop-filter:blur(1px)){.pd-bar{background:#0a0c0e}}
.pd-bar.show{transform:none}
.pd-bar .pb-name{flex:1;min-width:0;font-family:var(--head);font-size:15px;color:var(--txt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pd-bar .btn{padding:10px 20px;font-size:12px;border-color:var(--acc);background:var(--acc);color:#fff;flex-shrink:0}

/* ---------- 语言引导条 ---------- */
.lang-tip{display:flex;align-items:center;justify-content:center;gap:14px;background:var(--acc);color:#fff;font-size:13.5px;padding:0 44px 0 16px;max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.22,.61,.36,1);position:relative}
.lang-tip.on{max-height:64px;padding-top:9px;padding-bottom:9px}
.lang-tip a{color:#fff;font-weight:600;text-decoration:underline;text-underline-offset:3px;white-space:nowrap}
.lang-tip .lt-x{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:32px;height:32px;background:none;border:0;color:rgba(255,255,255,.8);font-size:18px;cursor:pointer}
.lang-tip .lt-x:hover{color:#fff}

/* ---------- 滚动渐入 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .65s cubic-bezier(.22,.61,.36,1),transform .65s cubic-bezier(.22,.61,.36,1);transition-delay:var(--rd,0s)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 可访问性 ---------- */
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.form input:focus-visible,.form select:focus-visible,.form textarea:focus-visible{outline:none;border-bottom-color:var(--acc)}
.skip-link{position:fixed;top:-60px;left:16px;z-index:300;background:var(--acc);color:#fff;padding:10px 18px;font-family:var(--head);font-size:14px;letter-spacing:.08em;transition:top .25s}
.skip-link:focus{top:0}

/* ---------- 404 ---------- */
.nf{padding:120px 0 140px;text-align:left}
.nf .nf-code{font-family:var(--mega);font-size:180px;font-weight:400;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.25);letter-spacing:.04em}
.nf h1{font-size:36px;text-transform:uppercase;margin:6px 0 12px;color:var(--txt)}
.nf p{color:var(--txt3);max-width:480px;margin:0 0 30px}
.nf .nf-btns{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 打印（强制白底） ---------- */
@media print{
  body{background:#fff !important;color:#000}
  .reveal{opacity:1 !important;transform:none !important;transition:none !important}
  .topbar,.navbar,.nav-toggle,.lang-tip,.pd-bar,.lightbox,.page-hero .crumb,
  .pd-thumbs,.pd .btn,.side-cta,.video-band,.cta-band,.hero .dots,
  footer .f-main>div:not(.f-brand),.f-bottom{display:none !important}
  .page-hero{background:none !important;padding:8px 0;color:#000;border:0}
  .page-hero h1,.page-hero .ph-t{color:#000;font-size:22pt;font-family:var(--head)}
  .pd{grid-template-columns:200px 1fr;gap:20px}
  .pd h1,.pd .pd-zh,.pd .pd-desc{color:#000}
  .spec th{background:#f2f2f2 !important;color:#000;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .spec td{color:#222}
  .pd-note{border-left-color:#999;background:#f7f7f7;color:#333}
  .sec{padding:10px 0}
  .sec::before{display:none}
  [style*="margin-top:80px"]{display:none !important}
  footer{background:none;color:#000;border-top:1pt solid #999}
  .f-brand b,.f-brand span{color:#000}
  .f-brand p{color:#333 !important}
  a{text-decoration:none;color:#000}
}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .container{padding:0 28px}
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .ribbon .container{grid-template-columns:repeat(3,1fr)}
  .ribbon .cell{border:0}
  .f-main{grid-template-columns:1fr 1fr}
  .hero .caption h1,.hero .caption .hx{font-size:72px}
  html[lang^="zh"] .hero .caption h1,html[lang^="zh"] .hero .caption .hx,
  html[lang="ja"] .hero .caption h1,html[lang="ja"] .hero .caption .hx,
  html[lang="ko"] .hero .caption h1,html[lang="ko"] .hero .caption .hx{font-size:50px}
  .vs-row b{font-size:78px}
  .mega-title{font-size:72px}
  .sec-head h2,.split h2{font-size:44px}
  .v-prod{grid-template-columns:1fr;gap:40px}
  .v-prod .vp-img{aspect-ratio:16/9}
}
@media(max-width:860px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;top:106px;left:0;right:0;bottom:0;background:#0a0c0e;flex-direction:column;align-items:stretch;gap:0;padding:10px 0;display:none;overflow-y:auto;z-index:99;border-top:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links>li>a{padding:15px 28px;border-bottom:1px solid var(--line);font-size:15px}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;display:none}
  .nav-links>li.exp .dropdown{display:block}
  .dropdown a{padding-left:44px;background:var(--bg2)}
  .split,.pd,.contact-grid,.prod-layout{grid-template-columns:1fr;gap:36px}
  .side-nav{position:static}
  .prod-grid,.prod-grid.cols3{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .hero{height:72vh}
  .hero .brand-h1{font-size:64px !important}
  .hero .brand-h1 .h1-zh{font-size:22px;letter-spacing:.4em;text-indent:.4em}
  .hero .exp-line{font-size:18px}
  .hero .caption h1,.hero .caption .hx{font-size:52px}
  html[lang^="zh"] .hero .caption h1,html[lang^="zh"] .hero .caption .hx,
  html[lang="ja"] .hero .caption h1,html[lang="ja"] .hero .caption .hx,
  html[lang="ko"] .hero .caption h1,html[lang="ko"] .hero .caption .hx{font-size:36px}
  .hero .coords{display:none}
  .sec{padding:64px 0}
  .sec-head h2,.split h2{font-size:34px}
  .mega-title{font-size:48px}
  html[lang^="zh"] .mega-title,html[lang="ja"] .mega-title,html[lang="ko"] .mega-title{font-size:36px}
  .vs-row{gap:18px;padding:24px 0}
  .vs-row b{font-size:54px}
  .vs-row b sup{font-size:22px}
  .v-plist{grid-template-columns:1fr}
  .v-tabs{gap:20px;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
  .v-tabs button{white-space:nowrap}
  .v-gal{grid-template-columns:1fr}
  .v-gal figure.wide{grid-column:span 1;aspect-ratio:16/9}
  .topbar .tb-r{display:none}
  .topbar .tb-l span:nth-child(2){display:none}
  .cert-flex{grid-template-columns:1fr}
  .cert-flex img{max-width:300px;margin:0 auto}
  .pd-thumbs{grid-template-columns:repeat(4,1fr)}
  .brand img{height:32px}
  .lang-sw{margin:12px 28px}
  .lang-sw>button{width:100%;justify-content:center;padding:12px}
  .lang-menu{position:static;box-shadow:none;border:1px solid var(--line);border-top:2px solid var(--acc);transform:none;opacity:1;visibility:visible;display:none;max-height:none}
  .lang-sw.open .lang-menu{display:block}
  .lang-sw:hover .lang-menu{display:none}
  .lang-sw.open:hover .lang-menu{display:block}
  .form input,.form select,.form textarea,.pfilter input{font-size:16px}
  .btn:active{transform:scale(.97)}
  .prod-card:active,.cat-card:active,.news-card:active{transform:scale(.985)}
  .btn,.prod-card,.cat-card,.news-card{transition-property:transform,box-shadow,background,color,border-color;transition-duration:.2s}
  .page-hero{padding:56px 0 40px}
  .page-hero h1,.page-hero .ph-t{font-size:44px}
  html[lang^="zh"] .page-hero h1,html[lang^="zh"] .page-hero .ph-t,
  html[lang="ja"] .page-hero h1,html[lang="ja"] .page-hero .ph-t,
  html[lang="ko"] .page-hero h1,html[lang="ko"] .page-hero .ph-t{font-size:34px}
}
@media(max-width:520px){
  .container{padding:0 20px}
  .prod-grid,.prod-grid.cols3{grid-template-columns:repeat(2,1fr);gap:12px}
  .prod-card .pc-body{padding:12px 13px 14px}
  .prod-card h3{font-size:14px;line-height:1.35}
  .prod-card .pc-zh{font-size:11.5px;margin-top:3px}
  .prod-card .pc-cat{font-size:9.5px;letter-spacing:.14em;margin-bottom:4px}
  .prod-card .pc-more{font-size:11px;padding-top:10px}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .cat-card:last-child{grid-column:span 2;aspect-ratio:16/9}
  .cat-card .cc-txt h3{font-size:16px}
  .ribbon .container{grid-template-columns:repeat(2,1fr)}
  .ribbon .cell:last-child{grid-column:span 2}
  .ribbon .cell{padding:22px 8px}
  .f-main{grid-template-columns:1fr 1fr;gap:28px 20px;padding:48px 24px 36px}
  .f-main .f-brand{grid-column:span 2}
  .f-main>div:last-child{grid-column:span 2}
  .page-hero{padding:48px 0 36px}
  .hero .caption h1,.hero .caption .hx{font-size:40px}
  html[lang^="zh"] .hero .caption h1,html[lang^="zh"] .hero .caption .hx,
  html[lang="ja"] .hero .caption h1,html[lang="ja"] .hero .caption .hx,
  html[lang="ko"] .hero .caption h1,html[lang="ko"] .hero .caption .hx{font-size:30px}
  .sec{padding:52px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2,.split h2{font-size:30px}
  .vs-row b{font-size:44px}
  .news-grid{gap:16px}
  .v-pcta{padding:24px 20px}
  .nf .nf-code{font-size:110px}
  .nf h1{font-size:26px}
  .f-bottom .container{flex-direction:column;text-align:center}
}