/* 奥泽沃德 ALL THE WORLD 官网 · 公共样式
   设计稿第二版：导航深蓝 / 内页深蓝窄条页头 / 内容区栅格 / 页脚深蓝
   四语切换、轮播、滚动入场动画均在此定义 */

:root{
  --blue:#185fa5;      /* 主深蓝 */
  --deep:#0c447c;      /* 标题与页脚深蓝 */
  --ink:#2c2c2a;       /* 正文深色 */
  --gray:#888780;      /* 次要文字 */
  --pale:#f1efe8;      /* 浅底 */
  --iconbg:#e6f1fb;    /* 图标底 */
  --line:#e6e6e1;      /* 分隔线 */
  --max:1180px;
  --nav:clamp(88px, 6vw, 200px);
}
html[dir="rtl"]{direction:rtl}
html[dir="rtl"] .stat::after{margin-left:auto;margin-right:auto}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}

/* ---------- 导航（公共） ---------- */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav);background:var(--blue);z-index:100}
.nav .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
/* logo 回到导航栏最左侧（撤销上一轮 order:2 的错误位置） */
.logo{display:flex;align-items:center;gap:12px;color:#fff;line-height:1.25;order:0;margin-left:64px;flex:none}
/* logo 高度独立固定值（不再用 min() 自适应被 6vw 锁死）：桌面 150px / 平板 100px / 手机 72px */
.logo .mark{height:180px;width:auto;max-width:none;flex:none;border:none;border-radius:0;display:block;background:transparent;padding:0;box-shadow:none}
.logo .mark-img{}
.logo .nm{font-size:clamp(15px,1.25vw,18px);font-weight:700;letter-spacing:.5px}
.logo .nm small{display:block;font-size:clamp(10px,.92vw,12.5px);font-weight:400;opacity:.72;letter-spacing:2px;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
/* 6 个菜单项时避免与 logo / 语言栏挤压 */
/* 俄文等长菜单：允许横向滚动而不是挤压 logo */
@media (max-width:1180px){ .nav-menu{gap:16px} .nav-menu a{font-size:13px} .nav-menu{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none} .nav-menu::-webkit-scrollbar{display:none} .nav .wrap{gap:12px} .lang{flex:none} }
.nav-menu a{color:rgba(255,255,255,.8);font-size:clamp(13.5px,1.1vw,16px);padding:6px 0;position:relative;transition:color .25s;white-space:nowrap}
.nav-menu a:hover{color:#fff}
.nav-menu a.on{color:#fff}
.nav-menu a.on::after{content:'';position:absolute;left:0;right:0;bottom:-1px;height:2px;background:#fff;border-radius:2px}
.lang{display:inline-flex;align-items:center;gap:2px;background:transparent;border:1.2px solid rgba(255,255,255,.55);border-radius:999px;padding:3px;flex:none}
.lang button{border:0;background:transparent;color:rgba(255,255,255,.82);font-size:13px;padding:6px 12px;border-radius:999px;cursor:pointer;font-family:inherit;transition:.25s;line-height:1}
.lang button:hover{color:#fff}
.lang button.on{background:#fff;color:var(--blue);font-weight:600}

/* ---------- 首屏轮播（仅首页） ---------- */
.hero{position:relative;margin-top:var(--nav);height:clamp(440px,54vh,500px);overflow:hidden;background:var(--blue)}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;background-color:var(--sc);background-image:var(--img,none);background-size:contain;background-position:center;background-repeat:no-repeat;opacity:0;transition:opacity .9s ease}
.slide.on{opacity:1}
.slide::after{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,40,76,.66),rgba(12,68,124,.28))}
.hero-deco{position:absolute;right:-100px;top:-150px;width:470px;height:470px;border:1px solid rgba(255,255,255,.15);border-radius:50%;pointer-events:none}
.hero-deco::after{content:'';position:absolute;inset:48px;border:1px solid rgba(255,255,255,.09);border-radius:50%}
.hero-inner{position:relative;z-index:3;height:100%;max-width:var(--max);margin:0 auto;padding:0 32px;display:flex;flex-direction:column;justify-content:center}
.hero-tag{font-size:12px;letter-spacing:3px;color:rgba(255,255,255,.72);margin-bottom:20px}
.hero h1{font-size:clamp(32px,5vw,58px);color:#fff;line-height:1.16;font-weight:700;letter-spacing:-.4px;max-width:17em}
.hero p{margin-top:20px;font-size:clamp(14.5px,1.45vw,18px);color:#cfe1f6;line-height:1.8;max-width:36em}
.hero-btns{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;height:48px;padding:0 30px;border-radius:3px;font-size:15px;font-weight:600;transition:.25s;cursor:pointer;border:0;font-family:inherit}
.btn-s{background:#fff;color:var(--blue)}
.btn-s:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.2)}
.btn-o{border:1px solid rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-o:hover{background:rgba(255,255,255,.14)}
.hero-cta{position:absolute;left:0;right:0;bottom:86px;z-index:5}
.hero-cta .wrap{display:flex;gap:14px;flex-wrap:wrap}
.hero-arrow{position:absolute;top:50%;margin-top:-22px;z-index:6;width:44px;height:44px;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.07);color:#fff;border-radius:50%;display:grid;place-items:center;cursor:pointer;opacity:0;transition:.3s;font-size:17px;line-height:1}
.hero:hover .hero-arrow{opacity:1}
.hero-arrow:hover{background:rgba(255,255,255,.2)}
.hero-arrow.prev{left:22px}
.hero-arrow.next{right:22px}
.dots{position:absolute;left:0;right:0;bottom:32px;z-index:6;display:flex;justify-content:center;gap:10px}
.dots i{width:22px;height:3px;background:rgba(255,255,255,.42);cursor:pointer;transition:.35s;border-radius:2px}
.dots i.on{width:42px;background:#fff}

/* ---------- 数据条 ---------- */
.stats{padding:clamp(56px,7vw,96px) 0 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,2.6vw,40px)}
.stat{padding:24px 8px;text-align:center}
.stat b{display:block;font-size:clamp(30px,3.8vw,46px);color:var(--blue);font-weight:700;letter-spacing:-1px;line-height:1}
.stat span{display:block;margin-top:10px;font-size:14px;color:var(--gray)}
.stat::after{content:'';display:block;width:22px;height:2px;margin:16px auto 0;background:rgba(24,95,165,.26);border-radius:2px}

/* ---------- 区块标题 ---------- */
section{padding:clamp(62px,7.5vw,104px) 0}
.sec-t{font-size:clamp(23px,2.9vw,33px);font-weight:700;color:var(--deep);display:flex;align-items:center;gap:14px;letter-spacing:-.2px}
.sec-t::before{content:'';width:26px;height:2px;background:var(--blue);flex:none}
.sec-d{margin-top:14px;color:var(--gray);font-size:15px;max-width:42em;line-height:1.85}
.band{background:var(--pale)}

/* ---------- 三列业务 ---------- */
.biz{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(26px,4vw,54px);margin-top:50px}
.biz .ic{width:56px;height:56px;border-radius:50%;background:var(--iconbg);display:grid;place-items:center;color:var(--blue);font-size:19px;font-weight:700}
.biz h3{margin-top:22px;font-size:19px;color:var(--deep)}
.biz p{margin-top:12px;color:var(--gray);font-size:14.5px;line-height:1.85}

/* ---------- 步骤（左竖线） ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,44px);margin-top:46px}
.step{padding-left:22px;border-left:2px solid var(--blue)}
.step .no{font-size:12.5px;color:var(--blue);font-weight:700;letter-spacing:1.5px}
.step h3{margin-top:10px;font-size:18px;color:var(--deep)}
.step p{margin-top:10px;color:var(--gray);font-size:14.5px;line-height:1.85}

/* ---------- 内页页头 ---------- */
.phead{background:var(--deep);margin-top:var(--nav);padding:clamp(54px,6.5vw,88px) 0 clamp(46px,6vw,74px);position:relative;overflow:hidden}
.phead::after{content:'';position:absolute;right:-80px;top:-120px;width:360px;height:360px;border:1px solid rgba(255,255,255,.1);border-radius:50%}
.phead .tag{font-size:12px;letter-spacing:3px;color:#93bce8}
.phead h1{margin-top:15px;font-size:clamp(27px,3.8vw,42px);color:#fff;font-weight:700;letter-spacing:-.3px}
.phead p{margin-top:15px;color:#b6d1ee;font-size:15.5px;line-height:1.8;max-width:42em}

/* ---------- 图文栅格 ---------- */
.split{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(28px,4.5vw,60px);align-items:center}
.split.rev .tx{order:2}
.photo{aspect-ratio:4/3;background:linear-gradient(135deg,#dce7f4,#eff4f9);border-radius:3px;display:grid;place-items:center;color:#9db4cb;font-size:12px;letter-spacing:2px;text-align:center;padding:16px}
.tx h2{font-size:clamp(21px,2.5vw,29px);color:var(--deep);font-weight:700;display:flex;align-items:center;gap:14px}
.tx h2::before{content:'';width:26px;height:2px;background:var(--blue);flex:none}
.tx p{margin-top:18px;color:var(--gray);font-size:15px;line-height:1.9}
.tx p + p{margin-top:14px}

/* ---------- 优势卡（浅底） ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.6vw,32px);margin-top:42px}
.adv-i{background:#fff;padding:30px 26px;border-radius:3px}
.adv-i .no{font-size:12.5px;font-weight:700;color:var(--blue);letter-spacing:1.5px}
.adv-i h3{margin-top:10px;font-size:17.5px;color:var(--deep)}
.adv-i p{margin-top:10px;font-size:14px;color:var(--gray);line-height:1.85}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.4vw,30px);margin-top:44px}
.flow-i .no{width:38px;height:38px;border-radius:50%;border:1px solid var(--blue);color:var(--blue);display:grid;place-items:center;font-size:14px;font-weight:700}
.flow-i h3{margin-top:16px;font-size:16.5px;color:var(--deep)}
.flow-i p{margin-top:9px;font-size:13.5px;color:var(--gray);line-height:1.8}

/* ---------- 联系 ---------- */
.ct-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.6vw,32px);margin-top:44px}
.ct-i{border-top:2px solid var(--blue);padding-top:20px}
.ct-i h3{font-size:14px;color:var(--gray);font-weight:600;letter-spacing:.5px}
.ct-i .v{margin-top:10px;font-size:17px;color:var(--deep);font-weight:600;line-height:1.6}

/* ---------- 页脚（公共） ---------- */
.footer{background:var(--deep);color:rgba(255,255,255,.72);padding:clamp(46px,5.5vw,68px) 0 36px;font-size:14px}
.footer .top{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap}
.footer b{display:block;color:#fff;font-size:15px;margin-bottom:12px;font-weight:600}
.footer .r{text-align:right}
.footer .r p + p{margin-top:7px}
.footer .bot{margin-top:38px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px}

/* ---------- 动画 ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1);transition-delay:calc(var(--i,0) * 90ms)}
.rv.in{opacity:1;transform:none}
.hero-in{animation:rise .9s cubic-bezier(.2,.7,.3,1) both}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .hero-in{animation:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .wrap,.hero-inner{padding:0 22px}
  .logo .mark{height:130px}
  .nav-menu{gap:20px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav-menu::-webkit-scrollbar{display:none}
  .stats-grid{grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,32px)}
  .stat{padding:18px 6px}
  .biz,.steps,.adv-grid,.split,.ct-grid{grid-template-columns:1fr}
  .split.rev .tx{order:0}
  .flow{grid-template-columns:1fr 1fr}
  .footer .r{text-align:left}
  .hero-arrow{opacity:.85}
  .slide{background-image:var(--img-m,var(--img,none))} /* 移动端用小图省流量 */
  .hero-cta{bottom:74px}
}
@media (max-width:520px){
  .logo{margin-left:8px}
  .logo .mark{height:90px}
  .logo .nm small{display:none}
  .hero-btns .btn,.hero-cta .btn{flex:1;justify-content:center;padding:0 18px}
}

/* ---------- 新闻中心（参考企业官网布局 · 深蓝配色） ---------- */
.news-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.news-more{font-size:13px;color:var(--blue);letter-spacing:1.5px;font-weight:600;transition:color .2s}
.news-more:hover{color:var(--deep)}
.news-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:clamp(24px,3vw,46px);align-items:stretch}
.news-pic{position:relative;display:block;background-size:cover;background-position:center;min-height:clamp(220px,24vw,310px);border-radius:10px;overflow:hidden;box-shadow:0 10px 28px rgba(12,68,124,.16)}
.news-pic::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,40,76,0) 55%,rgba(8,40,76,.45));pointer-events:none}
.news-pic-tag{position:absolute;left:0;bottom:0;z-index:2;background:var(--blue);color:#fff;font-size:12.5px;padding:7px 16px;letter-spacing:1px}
.news-list{list-style:none;display:flex;flex-direction:column;justify-content:center;margin:0;padding:0}
.news-list li{border-bottom:1px solid var(--line)}
.news-list li:last-child{border-bottom:0}
.news-list a{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:16px 2px;color:var(--deep);font-size:14.5px;line-height:1.5;transition:color .2s}
.news-list a:hover{color:var(--blue)}
.news-list a:hover .t{font-weight:600}
.news-list .d{color:var(--gray);font-size:12.5px;flex:none;font-family:inherit}

/* ---------- 公司简介（左图右文 · 深蓝 band） ---------- */
/* 公司简介（左）+ 合作单位（右）同排（参考企业官网双栏布局） */
.about-sec .ba-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(24px,3.2vw,48px);align-items:start}
.about-sec .about-mini{display:grid;grid-template-columns:minmax(150px,200px) 1fr;gap:18px;margin-top:20px;align-items:start}
.about-sec .about-pic-sm{background-size:cover;background-position:center;min-height:190px;border-radius:8px;box-shadow:0 8px 20px rgba(12,68,124,.14)}
.about-sec .about-tx h3{font-size:clamp(15px,1.4vw,18px);color:var(--deep);margin-bottom:10px;letter-spacing:.3px}
.about-sec .about-tx p{color:var(--deep);opacity:.82;font-size:13.5px;line-height:1.85}
.about-sec .about-tx .btn{margin-top:14px;display:inline-flex;font-size:13px;padding:8px 20px}
.partner-grid-sm{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
.partner-grid-sm .partner-i{min-height:84px;font-size:14px}
@media (max-width:900px){
  .about-sec .ba-grid{grid-template-columns:1fr}
  .about-sec .about-mini{grid-template-columns:1fr}
}

/* ---------- 顶部横幅（单张横图，替代原轮播；矮高度保证首屏露出更多内容） ---------- */
.hero-banner{margin:calc(var(--nav) + 30px) auto 40px;max-width:var(--max);padding:0 32px;box-sizing:border-box;background:none;border:none}
.hero-banner .ph{height:clamp(340px,46vh,520px);border-radius:12px;overflow:hidden;background:var(--blue);box-shadow:0 12px 32px rgba(12,68,124,.18)}
.hero-banner img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}

/* ---------- 合作单位（对应参考图品牌馆位置） ---------- */
.partner-sec .partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.partner-i{display:flex;align-items:center;justify-content:center;min-height:92px;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--deep);font-size:15.5px;font-weight:600;letter-spacing:.5px;text-align:center;transition:box-shadow .2s,transform .2s}
.partner-i:hover{box-shadow:0 10px 24px rgba(12,68,124,.12);transform:translateY(-3px)}
@media (max-width:760px){.partner-grid{grid-template-columns:repeat(2,1fr)}}

/* ===== 产品中心（动态渲染板块） ===== */
.pd-sec { padding: 46px 0 70px; }
.pd-sec .sec-d { margin-top: 10px; }

.pd-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 30px;
}

.pd-tab {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--deep);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .2s;
}

.pd-tab i {
  font-style: normal;
  font-size: 12px;
  color: var(--gray);
  background: #f2f5f9;
  border-radius: 999px;
  padding: 1px 8px;
}

.pd-tab:hover { border-color: var(--blue); color: var(--blue); }

.pd-tab.on {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.pd-tab.on i { background: rgba(255,255,255,.22); color: #fff; }

.pd-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pd-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .2s, transform .2s;
}

.pd-card:hover {
  box-shadow: 0 12px 28px rgba(12,68,124,.14);
  transform: translateY(-3px);
}

.pd-pic {
  height: 150px;
  background: linear-gradient(135deg, #1a4f8f, #2f6fb5);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.85);
  font-size: 13px;
  letter-spacing: 2px;
}

.pd-body { padding: 14px 16px 18px; display: flex; flex-direction: column; flex: 1; }
.pd-body h3 { font-size: 16px; color: var(--deep); margin-bottom: 6px; }
.pd-desc { font-size: 13px; color: var(--gray); line-height: 1.6; min-height: 42px; }

.pd-rows { margin-top: 10px; }
.pd-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12.5px;
  padding: 5px 0;
  border-top: 1px dashed #eef1f5;
}
.pd-row span { color: var(--gray); flex: none; }
.pd-row b { color: var(--deep); font-weight: 600; text-align: right; }

.pd-btn {
  margin-top: 14px;
  align-self: flex-start;
  font-size: 13px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 999px;
  padding: 6px 16px;
  transition: all .2s;
}
.pd-btn:hover { background: var(--blue); color: #fff; }

.pd-loading { grid-column: 1 / -1; text-align: center; color: var(--gray); padding: 40px 0; }

@media (max-width: 1000px) { .pd-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .pd-grid { grid-template-columns: 1fr; } }

/* 产品中心搜索框 */
.pd-search {
  display: flex;
  gap: 10px;
  margin: 24px 0 18px;
  max-width: 560px;
}

.pd-search input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 22px;
  font-size: 14px;
  color: var(--deep);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.pd-search input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(24, 95, 165, .12);
}

.pd-search button {
  flex: none;
  border: none;
  background: var(--blue);
  color: #fff;
  border-radius: 999px;
  padding: 11px 26px;
  font-size: 14px;
  cursor: pointer;
  transition: background .2s;
}

.pd-search button:hover { background: var(--deep); }

/* 卡片左上角分类角标 */
.pd-cat-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  background: rgba(26, 79, 143, 0.88);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 1px;
}

.pd-pic { position: relative; }

/* ===== 产品中心：彩色圆图标分类（与小程序一致） ===== */
.pd-icons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 26px 30px;
  margin: 28px 0 34px;
}

.pd-icon-item { width: 96px; cursor: pointer; text-align: center; }

.pd-icon-circle {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid transparent;
  transition: transform .2s, box-shadow .2s;
}

.pd-icon-item:hover .pd-icon-circle {
  transform: translateY(-4px);
  box-shadow: 0 10px 22px rgba(12, 68, 124, .2);
}

.pd-icon-item.on .pd-icon-circle {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(24, 95, 165, .15);
}

.pd-icon-circle img { width: 44px; height: 44px; }

.pd-icon-label {
  margin-top: 8px;
  font-size: 13px;
  color: var(--deep);
}

.pd-icon-item.on .pd-icon-label { color: var(--blue); font-weight: 600; }

.pd-icon-label i {
  font-style: normal;
  font-size: 11px;
  color: var(--gray);
}

/* 本地供应子分类行 */
.pd-subs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px 26px;
  margin: 0 0 32px;
}

/* 无图卡片占位：类目白色图标 */
.pd-ph-icon { width: 52px; height: 52px; opacity: .9; }

/* ===== 移动端菜单（2026-09-24）===== */
.nav-toggle{display:none;background:none;border:none;font-size:26px;line-height:1;color:#0f3d6b;cursor:pointer;padding:4px 8px}
@media(max-width:768px){
  .nav .wrap{position:relative}
  .nav-toggle{display:block;margin-left:auto}
  .nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;
    padding:8px 0;box-shadow:0 10px 28px rgba(15,61,107,.16);border-radius:0 0 12px 12px;z-index:99}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px 20px;border-bottom:1px solid #eef3f8}
}
/* 无障碍：键盘可见焦点 */
a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:3px solid #0f3d6b;outline-offset:2px}

/* ===== 按语言切换的片段（2026-09-24）===== */
html[lang="en"] .lang-zh{display:none!important}
html:not([lang="en"]) .lang-en{display:none!important}