:root{--paper:#fbfaf6;--cream:#f6f2e9;--cream2:#eee7da;--white:#ffffff;--green:#0d3f2f;--greenDeep:#071b14;--greenMid:#174d39;--gold:#eba15c;--gold2:#f0bd7d;--ink:#11251c;--ink2:#2a4a3d;--muted:#657a70;--line:rgba(17,37,28,.10);--line2:rgba(17,37,28,.16);--shadow:0 26px 72px rgba(7,27,20,.12);--shadowSoft:0 14px 36px rgba(7,27,20,.08);--container:min(1180px,calc(100% - 44px));--r-xl:36px;--r-lg:28px;--r-md:20px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:"Inter","Noto Sans SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(circle at 12% 6%,rgba(235,161,92,.10),transparent 22%),radial-gradient(circle at 88% 0%,rgba(13,63,47,.09),transparent 26%),linear-gradient(180deg,#fffdfa 0%,#f7f3ea 100%);line-height:1.72;overflow-x:hidden}img{display:block;max-width:100%;height:auto}a{text-decoration:none;color:inherit}.container{width:var(--container);margin:0 auto}.section{padding:92px 0}.section.tight{padding:58px 0}.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.72);border:1px solid rgba(235,161,92,.24);color:var(--gold);font-size:11px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;backdrop-filter:blur(14px)}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(180deg,var(--gold2),var(--gold));box-shadow:0 0 0 6px rgba(235,161,92,.10)}h1,h2,h3,h4{letter-spacing:-.035em}h1{font-size:clamp(42px,5.6vw,76px);line-height:1.04;font-weight:900}h2{font-size:clamp(30px,3.7vw,50px);line-height:1.12;font-weight:870}h3{font-size:clamp(21px,2vw,28px);line-height:1.18;font-weight:820}h4{font-size:20px;line-height:1.25;font-weight:820}p{color:var(--muted)}.lead{font-size:clamp(16px,1.35vw,19px);line-height:1.95;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 24px;border-radius:999px;font-size:14px;font-weight:760;transition:.25s ease;white-space:nowrap}.btn:hover{transform:translateY(-2px)}.btn.primary{background:linear-gradient(135deg,var(--greenDeep),var(--greenMid));color:#fff;box-shadow:0 16px 34px rgba(7,27,20,.22)}.btn.secondary{background:#fff;border:1px solid var(--line2);color:var(--ink)}.btn.light{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);color:#fff}.header{position:sticky;top:0;z-index:90;background:rgba(251,250,246,.83);backdrop-filter:blur(18px);border-bottom:1px solid rgba(17,37,28,.06)}.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.logo{width:118px;height:auto;object-fit:contain}.brand-sub{padding-left:12px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:2px}.brand-sub strong{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--greenDeep)}.brand-sub span{font-size:12px;color:var(--muted)}.nav-links{display:flex;align-items:center;gap:27px;list-style:none}.nav-links a{font-size:14px;font-weight:660;color:var(--ink2);position:relative;padding:10px 0}.nav-links a:after{content:"";position:absolute;left:0;bottom:5px;width:0;height:1px;background:var(--gold);transition:.25s}.nav-links a:hover:after,.nav-links a.active:after{width:100%}.nav-actions{display:flex;gap:12px;align-items:center}.hero{padding:28px 0 68px}.hero-card{display:grid;grid-template-columns:1.02fr .98fr;gap:24px;padding:20px;border-radius:var(--r-xl);background:rgba(255,255,255,.58);border:1px solid rgba(255,255,255,.86);box-shadow:var(--shadow);backdrop-filter:blur(18px)}.hero-copy{padding:42px 25px 28px 18px;display:flex;flex-direction:column;justify-content:center}.hero-copy h1{max-width:9.6em;margin:18px 0 18px}.gold{color:var(--gold)}.green{color:var(--green)}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:22px;padding:17px;box-shadow:var(--shadowSoft)}.metric strong{display:block;font-size:20px;line-height:1.12;color:var(--greenDeep);font-weight:860;margin-bottom:7px}.metric span{display:block;color:var(--muted);font-size:13px;line-height:1.65}.hero-media,.media-card,.product-photo{position:relative;border-radius:30px;overflow:hidden;box-shadow:var(--shadowSoft);background:#ddd3c4}.hero-media{min-height:610px}.hero-media img,.media-card img,.product-photo img{width:100%;height:100%;object-fit:cover}.hero-media:after,.media-card:after,.product-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,27,20,.02),rgba(7,27,20,.06) 38%,rgba(7,27,20,.55))}.media-caption{position:absolute;left:22px;right:22px;bottom:22px;z-index:2;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(14px);border-radius:22px;padding:17px;max-width:560px}.media-caption h4{margin-bottom:6px;color:#fff}.media-caption p{color:rgba(255,255,255,.84);font-size:14px;line-height:1.75}.page-hero{padding:64px 0 46px;background:radial-gradient(circle at 18% 10%,rgba(235,161,92,.12),transparent 24%),linear-gradient(180deg,rgba(255,255,255,.28),rgba(246,242,233,.65));border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(42px,5vw,68px);max-width:850px;margin:18px 0 14px}.page-hero p{max-width:760px;font-size:17px;line-height:1.95}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:30px}.section-head .title{max-width:610px}.section-head h2{margin-top:16px}.section-head p{max-width:560px;font-size:16px;line-height:1.9}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.88);border-radius:28px;padding:28px;box-shadow:var(--shadowSoft);position:relative;overflow:hidden}.card:after{content:"";position:absolute;right:-36px;top:-42px;width:136px;height:136px;border-radius:50%;background:radial-gradient(circle,rgba(235,161,92,.12),transparent 70%)}.icon{width:56px;height:56px;border-radius:18px;margin-bottom:18px;display:grid;place-items:center;background:linear-gradient(145deg,var(--greenDeep),var(--greenMid));color:#fff;font-size:24px;box-shadow:0 12px 26px rgba(7,27,20,.16)}.card h3,.card h4{margin-bottom:10px}.card p{font-size:15px;line-height:1.85}.split{display:grid;grid-template-columns:.92fr 1.08fr;gap:22px;align-items:stretch}.media-card{min-height:430px}.dark{background:linear-gradient(180deg,var(--greenDeep),#16372a);color:#fff;border-radius:30px;padding:34px;box-shadow:var(--shadow)}.dark h2{margin:18px 0 12px;color:#fff}.dark p{color:rgba(255,255,255,.70);font-size:16px;line-height:1.9}.loop-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}.loop{padding:18px;border-radius:21px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10)}.loop b{display:block;margin-bottom:7px;font-size:15px}.loop span{display:block;color:rgba(255,255,255,.64);font-size:13px;line-height:1.75}.product-wrap{display:grid;grid-template-columns:1.06fr .94fr;gap:22px;align-items:stretch}.product-photo{min-height:520px}.products-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.product{background:rgba(255,255,255,.84);border:1px solid rgba(255,255,255,.92);border-radius:24px;padding:22px;box-shadow:var(--shadowSoft)}.product .no{font-size:11px;font-weight:850;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}.product h4{margin-bottom:8px}.product p{font-size:14px;line-height:1.82}.tag{display:inline-flex;margin-top:14px;padding:6px 12px;border-radius:999px;background:rgba(235,161,92,.14);color:#8b6538;font-size:12px;font-weight:760}.quote{background:linear-gradient(180deg,#10281f,#17362a);color:#fff;border-radius:30px;padding:36px;position:relative;overflow:hidden;box-shadow:var(--shadow)}.quote:before{content:"“";position:absolute;left:18px;top:-22px;font-size:150px;line-height:1;font-weight:900;color:rgba(255,255,255,.08)}.quote h2{position:relative;z-index:2;margin:44px 0 14px;color:#fff}.quote p{position:relative;z-index:2;color:rgba(255,255,255,.74);font-size:16px;line-height:1.95}.list{display:grid;gap:15px}.list-item{background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.88);border-radius:24px;padding:20px 22px;box-shadow:var(--shadowSoft)}.list-item h4{margin-bottom:8px}.list-item p{font-size:15px;line-height:1.85}.timeline{display:grid;gap:16px}.step{display:grid;grid-template-columns:80px 1fr;gap:20px;align-items:start}.step-num{font-size:32px;font-weight:900;color:var(--gold);line-height:1}.step-body{border-left:1px solid var(--line2);padding-left:24px;padding-bottom:16px}.step-body h3{margin-bottom:8px}.step-body p{font-size:15px;line-height:1.85}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.news-card{background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden;box-shadow:var(--shadowSoft)}.news-cover{height:180px;background:linear-gradient(135deg,var(--greenDeep),var(--greenMid));position:relative}.news-cover:after{content:"";position:absolute;right:-40px;bottom:-40px;width:150px;height:150px;border-radius:50%;border:1px solid rgba(235,161,92,.24)}.news-body{padding:22px}.news-date{font-size:12px;color:var(--gold);font-weight:800;letter-spacing:.12em;margin-bottom:10px}.news-body p{font-size:14px;line-height:1.8}.contact-band{background:linear-gradient(135deg,var(--greenDeep) 0%,#17392c 56%,#214c3b 100%);color:#fff;border-radius:34px;padding:36px;display:flex;align-items:center;justify-content:space-between;gap:24px;box-shadow:var(--shadow)}.contact-band h2{color:#fff;margin:16px 0 10px}.contact-band p{color:rgba(255,255,255,.70);max-width:680px}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.contact-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadowSoft)}.contact-card h3{margin-bottom:16px}.contact-row{display:grid;gap:6px;padding:14px 0;border-bottom:1px solid var(--line)}.contact-row:last-child{border-bottom:0}.contact-row b{color:var(--greenDeep)}.contact-row span{color:var(--muted);font-size:15px}.form{display:grid;gap:14px}.input{width:100%;border:1px solid var(--line2);border-radius:16px;padding:14px 16px;background:#fff;font:inherit;color:var(--ink)}textarea.input{min-height:128px;resize:vertical}.footer{margin-top:30px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.88);border-radius:32px;box-shadow:var(--shadowSoft);overflow:hidden}.footer-main{display:grid;grid-template-columns:1.35fr .85fr .85fr 1.1fr;gap:28px;padding:32px}.footer-logo{width:132px;margin-bottom:18px}.footer p,.footer li{font-size:14px;line-height:1.85;color:var(--muted)}.footer h5{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}.footer ul{list-style:none;display:grid;gap:9px}.footer a:hover{color:var(--green)}.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 32px;border-top:1px solid var(--line);background:rgba(247,244,237,.55);font-size:13px;color:#6b8177}@media (max-width:1100px){.hero-card,.split,.product-wrap,.contact-grid,.footer-main{grid-template-columns:1fr}.hero-media{min-height:520px}.product-photo{min-height:420px;order:-1}.media-card{min-height:360px}.section-head{align-items:flex-start;flex-direction:column}.contact-band{flex-direction:column;align-items:flex-start}.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width:1080px){:root{--container:min(100% - 28px,1180px)}.nav{min-height:auto;padding:14px 0;flex-wrap:wrap;justify-content:center}.brand{width:100%;justify-content:center}.brand-sub{display:none}.logo{width:136px;max-width:42vw}.nav-links{width:100%;justify-content:center;gap:16px;flex-wrap:wrap}.nav-actions{width:100%;justify-content:center}.hero-card{padding:16px;border-radius:30px}.hero-copy{padding:18px 8px 4px}.metric-grid,.grid-3,.loop-grid,.products-grid,.news-grid{grid-template-columns:1fr}.footer-main{grid-template-columns:1fr 1fr}}@media (max-width:640px){:root{--container:min(100% - 20px,1180px)}.header{position:static}.section{padding:58px 0}.page-hero{padding:48px 0 34px}.nav-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.nav-links li{display:flex}.nav-links a{width:100%;text-align:center;padding:10px 12px;background:rgba(255,255,255,.78);border:1px solid var(--line);border-radius:999px}.nav-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.btn{padding:0 14px;font-size:13px}.hero-card{gap:14px;padding:12px;border-radius:24px}.hero-media{min-height:360px;border-radius:24px}.media-caption{left:12px;right:12px;bottom:12px;padding:14px;border-radius:18px}.card,.dark,.product,.quote,.list-item,.contact-card,.contact-band,.footer-main{padding:22px;border-radius:24px}.media-card,.product-photo{min-height:280px;border-radius:24px}.grid-4{grid-template-columns:1fr}.footer-main{grid-template-columns:1fr}.footer-bottom{padding:16px 22px}.step{grid-template-columns:1fr}.step-body{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:14px}}
/* ===== 汉堡菜单 + 手机端专业优化（阶段一增补，不影响桌面端） ===== */
.nav-toggle{display:none;position:relative;z-index:10000;width:46px;height:46px;border:1px solid var(--line2);border-radius:14px;background:rgba(255,255,255,.7);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;flex:0 0 auto}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:.28s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-menu{display:flex;align-items:center;gap:22px}

@media (max-width:1080px){
  .header{backdrop-filter:none;-webkit-backdrop-filter:none;overflow:visible}
  .nav{min-height:64px;padding:10px 0;flex-wrap:nowrap;justify-content:space-between}
  .brand{width:auto;justify-content:flex-start}
  .brand-sub{display:none}
  .nav-toggle{display:flex}
  /* 折叠面板：默认收起，点击展开 */
  .nav-menu{position:fixed;top:0;right:0;bottom:0;height:100vh;width:min(80vw,320px);
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    background:#fbfaf6;
    box-shadow:-20px 0 60px rgba(7,27,20,.18);padding:88px 22px 32px;
    transform:translateX(105%);transition:transform .34s cubic-bezier(.4,0,.2,1);
    z-index:9999;overflow-y:auto;-webkit-overflow-scrolling:touch}
  .nav-menu.open{transform:translateX(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px;width:100%}
  .nav-links li{display:block;width:100%}
  .nav-links a{display:block;width:100%;padding:15px 16px;border-radius:14px;
    font-size:16px;font-weight:600;background:transparent;border:0;color:var(--ink);text-align:left}
  .nav-links a.active{background:rgba(13,63,47,.07);color:var(--green)}
  .nav-links a:active{background:rgba(13,63,47,.06)}
  .nav-actions{flex-direction:column;align-items:stretch;width:100%;gap:10px;
    margin-top:18px;padding-top:20px;border-top:1px solid var(--line)}
  .nav-actions .btn{width:100%;min-height:52px;font-size:15px}
  /* 遮罩 */
  .nav-backdrop{position:fixed;inset:0;background:rgba(7,27,20,.45);
    opacity:0;visibility:hidden;transition:.3s;z-index:9998}
  .nav-backdrop.show{opacity:1;visibility:visible}
  body.nav-open{overflow:hidden}
}

/* 手机端整体精修：间距/比例/触摸目标 */
@media (max-width:640px){
  .hero{padding-top:8px}
  .hero-card{gap:16px;padding:14px}
  .hero-copy{padding:20px 12px 6px}
  h1{font-size:clamp(34px,9vw,46px);line-height:1.08}
  h2{font-size:clamp(26px,7vw,34px)}
  .lead{font-size:15.5px;line-height:1.85}
  .section{padding:46px 0}
  .section.tight{padding:36px 0}
  .hero-actions .btn,.contact-band .btn{flex:1;min-width:140px}
  .metric{padding:16px 18px}
  .card,.product,.loop,.news-card{border-radius:20px}
  .news-cover{height:150px}
  /* 触摸目标不小于 44px，符合移动端规范 */
  a,button{-webkit-tap-highlight-color:rgba(13,63,47,.08)}
  .footer-main{gap:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}

/* 抽屉菜单单列竖排精修（覆盖旧的两列布局） */
@media (max-width:1080px){
  #navMenu .nav-links{display:flex !important;flex-direction:column !important;
    grid-template-columns:none !important;gap:0 !important}
  #navMenu .nav-links li{display:block !important;width:100%;
    border-bottom:1px solid rgba(17,37,28,.07)}
  #navMenu .nav-links li:last-child{border-bottom:0}
  #navMenu .nav-links a{display:block;width:100%;padding:16px 14px;
    border-radius:0;border:0;background:transparent;font-size:16px;
    font-weight:600;color:var(--ink);text-align:left;letter-spacing:0}
  #navMenu .nav-links a.active{background:transparent;color:var(--green);font-weight:800}
  #navMenu .nav-links a.active::before{content:"";display:inline-block;
    width:6px;height:6px;border-radius:50%;background:var(--gold);
    margin-right:9px;vertical-align:middle}
  #navMenu .nav-actions{display:flex !important;flex-direction:column !important;
    grid-template-columns:none !important;width:100%;gap:10px;
    margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
  #navMenu .nav-actions .btn{width:100%;min-height:52px;font-size:15px}
}

/* ===== 视觉高级化（克制档：微交互 + 滚动入场 + 质感微调） ===== */

/* 1. 微交互：卡片悬停轻微上浮，阴影柔和加深 */
.card,.product,.metric,.news-card,.loop{
  transition:transform .42s cubic-bezier(.22,1,.36,1),box-shadow .42s ease,border-color .42s ease}
@media (hover:hover){
  .card:hover,.product:hover,.news-card:hover{
    transform:translateY(-5px);box-shadow:0 22px 54px rgba(7,27,20,.13);
    border-color:rgba(235,161,92,.28)}
  .metric:hover,.loop:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(7,27,20,.10)}
}

/* 2. 按钮微交互：按压反馈 + 主按钮悬停光泽 */
.btn{position:relative;transition:transform .2s ease,box-shadow .28s ease,background .28s ease}
@media (hover:hover){
  .btn.primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(7,27,20,.30)}
  .btn.secondary:hover,.btn.light:hover{transform:translateY(-2px);border-color:var(--gold);color:var(--green)}
}
.btn:active{transform:translateY(0) scale(.985)}

/* 3. 导航链接：精致下划线动画 */
@media (min-width:1081px){
  .nav-links a{position:relative;padding-bottom:3px}
  .nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;
    height:2px;border-radius:2px;background:linear-gradient(90deg,var(--gold),var(--gold2));
    transition:right .32s cubic-bezier(.22,1,.36,1)}
  .nav-links a:hover::after,.nav-links a.active::after{right:0}
}

/* 4. 滚动入场：区块淡入上移（仅在 JS 就绪时启用，无JS则正常显示，保证可访问性） */
.js-ready .reveal{opacity:0;transform:translateY(26px);
  transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.js-ready .reveal.in{opacity:1;transform:none}
/* 同组元素依次错落进入 */
.js-ready .reveal.d1{transition-delay:.08s}
.js-ready .reveal.d2{transition-delay:.16s}
.js-ready .reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  .js-ready .reveal{opacity:1 !important;transform:none !important;transition:none}
}

/* 5. 质感微调：图片容器悬停轻微缩放（高级品牌站常见手法） */
.hero-media,.media-card,.product-photo{overflow:hidden}
.hero-media img,.media-card img,.product-photo img,.news-cover{
  transition:transform .9s cubic-bezier(.22,1,.36,1)}
@media (hover:hover){
  .media-card:hover img,.product-photo:hover img{transform:scale(1.035)}
}

/* ===== 中英语言切换器 ===== */
.lang-switch{display:inline-flex;align-items:center;border:1px solid var(--line2);
  border-radius:999px;overflow:hidden;background:rgba(255,255,255,.7);height:38px}
.lang-switch a{display:flex;align-items:center;padding:0 14px;height:100%;
  font-size:13px;font-weight:700;color:var(--muted);transition:.2s;letter-spacing:.02em}
.lang-switch a.active{background:var(--green);color:#fff}
@media (hover:hover){.lang-switch a:not(.active):hover{color:var(--green)}}
@media (max-width:1080px){
  #navMenu .lang-switch{width:100%;height:48px;margin-top:18px;justify-content:center}
  #navMenu .lang-switch a{flex:1;justify-content:center;font-size:15px}
}

/* ===== 手机端品牌区精修：logo 缩小 + 显示品牌文字 ===== */
@media (max-width:1080px){
  /* 手机/iPad：logo 与品牌文字整体放大，更大气（不影响电脑端） */
  .nav{min-height:84px}
  .nav .logo{width:152px !important;max-width:44vw !important}
  /* 品牌文字同步放大，保持辅助但更清晰有分量 */
  .nav .brand-sub{display:flex !important;padding-left:15px;
    border-left:1px solid var(--line2);flex-direction:column;gap:3px}
  .nav .brand-sub strong{font-size:12.5px;letter-spacing:.13em;
    text-transform:uppercase;color:var(--greenDeep);line-height:1.3;
    font-weight:800;white-space:nowrap}
  .nav .brand-sub span{font-size:12.5px;color:var(--muted);
    line-height:1.3;white-space:nowrap}
  .brand{gap:15px;min-width:0;flex:1 1 auto;align-items:center;overflow:hidden}
  /* 英文文字较长，手机/iPad 端统一用更克制字号，确保各宽度都不截断 */
  html[lang="en"] .nav .brand-sub strong,
  html[lang="en"] .nav .brand-sub span{font-size:10px;letter-spacing:.05em}
  html[lang="en"] .nav .logo{width:132px !important}
}
@media (max-width:430px){
  /* 较窄屏：等比收一档，保持同样的主次关系 */
  .nav .logo{width:132px !important;max-width:42vw !important}
  .nav .brand-sub{padding-left:12px}
  .nav .brand-sub strong,.nav .brand-sub span{font-size:11px}
}
@media (max-width:360px){
  /* 更窄屏：再收一档防溢出 */
  .nav .logo{width:118px !important;max-width:40vw !important}
  .nav .brand-sub strong,.nav .brand-sub span{font-size:10px}
}
@media (max-width:320px){
  /* 极窄屏：文字隐藏，只留放大的 logo（保证不挤） */
  .nav .logo{width:120px !important}
  .nav .brand-sub{display:none !important}
}
/* 英文文字较长：在标准手机（≤480px）统一只显示放大的 logo，
   不显示英文副标题，彻底杜绝与汉堡按钮重叠（务实可靠方案）。
   英文副标题仅在 iPad / 桌面等更宽屏幕显示。中文页字短，不受此规则影响。 */
@media (max-width:480px){
  html[lang="en"] .nav .brand-sub{display:none !important}
  html[lang="en"] .nav .logo{width:140px !important;max-width:46vw !important}
}

/* ===== 桌面端导航三段式布局：品牌左 | 链接居中 | 切换+按钮右 ===== */
@media (min-width:1081px){
  .nav{display:flex;align-items:center;gap:20px;flex-wrap:nowrap}
  .brand{flex:0 0 auto}
  /* nav-menu 占据 brand 之外全部空间，内部三段分配 */
  .nav-menu{flex:1 1 auto;display:flex;align-items:center;gap:18px;
    justify-content:flex-end;position:static;width:auto;height:auto;
    background:none;box-shadow:none;padding:0;transform:none;overflow:visible;
    min-width:0}
  /* 链接区：占据中间弹性空间并在其中居中，屏窄时收缩间距而非重叠 */
  .nav-links{flex:1 1 auto;display:flex;align-items:center;
    justify-content:center;gap:clamp(14px,2.4vw,32px);margin:0;padding:0;
    width:auto;flex-wrap:nowrap;grid-template-columns:none;min-width:0;
    position:static;transform:none}
  .nav-links li{display:block}
  .nav-links a{white-space:nowrap}
  /* 右侧：语言切换 + 商务合作，靠最右，不收缩 */
  .lang-switch{flex:0 0 auto;margin:0;order:1}
  .nav-actions{flex:0 0 auto;order:2;display:flex;gap:12px;align-items:center;
    width:auto;margin:0;padding:0;border:0}
  .nav-actions .btn{width:auto;white-space:nowrap}
}

/* ===== 页头与正文留白校准：logo 不贴边，区块标题与首屏内距保持一致 ===== */
@media (min-width:1081px){
  .nav .brand{padding-left:clamp(48px,3.6vw,66px)}
}
.section-head{padding-left:clamp(28px,4vw,56px);padding-right:clamp(28px,4vw,56px)}

/* ===== 英文胶囊标签清晰度优化：取消灰底模糊，提高文字对比 ===== */
.eyebrow{
  background:rgba(255,248,236,.96);
  border-color:rgba(235,161,92,.58);
  color:#b7662b;
  font-size:12px;
  font-weight:900;
  letter-spacing:.16em;
  box-shadow:0 10px 24px rgba(7,27,20,.10),inset 0 1px 0 rgba(255,255,255,.84);
  backdrop-filter:none;
  -webkit-backdrop-filter:none;
}
.eyebrow:before{
  box-shadow:0 0 0 6px rgba(235,161,92,.16);
}

/* ===== 内页内容留白统一：关于/产品/守护/新闻/联系页面与首页保持同一呼吸感 ===== */
main:has(.page-hero) .page-hero > .container,
main:has(.page-hero) > .section > .container{
  padding-left:clamp(28px,4vw,56px);
  padding-right:clamp(28px,4vw,56px);
}
@media (max-width:640px){
  main:has(.page-hero) .page-hero > .container,
  main:has(.page-hero) > .section > .container{
    padding-left:12px;
    padding-right:12px;
  }
}

/* 英文首页移动/平板页头：logo 左侧与首屏正文起点对齐 */
@media (max-width:1080px){
  html[lang="en"] .nav .brand{
    padding-left:clamp(22px,5vw,42px);
  }
}
@media (max-width:640px){
  html[lang="en"] .nav .brand{
    padding-left:22px;
  }
}

/* 中文页头中小屏：品牌 logo 稍微离开左边界 */
@media (max-width:1080px){
  html[lang="zh-CN"] .nav .brand{
    padding-left:clamp(14px,3vw,24px);
  }
}
@media (max-width:640px){
  html[lang="zh-CN"] .nav .brand{
    padding-left:16px;
  }
}

/* 英文首页手机端：复用中文页头的品牌呈现 */
@media (max-width:1080px){
  html[lang="en"] .brand.brand-mobile-cn{
    overflow:visible;
    gap:clamp(9px,2.8vw,15px);
  }
  html[lang="en"] .brand.brand-mobile-cn .logo{
    width:clamp(118px,33vw,152px) !important;
    max-width:44vw !important;
    flex:0 0 auto;
  }
  html[lang="en"] .brand.brand-mobile-cn .brand-sub{
    display:flex !important;
    padding-left:clamp(10px,3vw,15px);
    min-width:max-content;
    flex:0 0 auto;
    overflow:visible;
    gap:clamp(2px,.7vw,3px);
  }
  html[lang="en"] .brand.brand-mobile-cn .brand-sub strong{
    font-size:clamp(10px,3vw,12px);
    letter-spacing:clamp(.04em,1.5vw,.08em);
    overflow:visible;
  }
  html[lang="en"] .brand.brand-mobile-cn .brand-sub span{
    font-size:clamp(10px,3vw,12.5px);
    letter-spacing:0;
    overflow:visible;
  }
}
@media (max-width:480px){
  html[lang="en"] .brand.brand-mobile-cn .brand-sub{
    display:flex !important;
  }
}
@media (max-width:320px){
  html[lang="en"] .brand.brand-mobile-cn .brand-sub{
    display:none !important;
  }
}

/* 中文手机端正文可读性：整体放大一档，保持卡片比例与留白协调 */
@media (max-width:640px){
  html[lang="zh-CN"] .lead,
  html[lang="zh-CN"] .page-hero p,
  html[lang="zh-CN"] .section-head p,
  html[lang="zh-CN"] .card p,
  html[lang="zh-CN"] .list-item p,
  html[lang="zh-CN"] .product p,
  html[lang="zh-CN"] .step-body p,
  html[lang="zh-CN"] .news-body p,
  html[lang="zh-CN"] .contact-band p,
  html[lang="zh-CN"] .contact-card p,
  html[lang="zh-CN"] .footer p{
    font-size:clamp(16.8px,4.35vw,18.4px);
    line-height:1.98;
    color:#526960;
    overflow-wrap:anywhere;
    line-break:loose;
  }
  html[lang="zh-CN"] .lead,
  html[lang="zh-CN"] .page-hero p{
    font-size:clamp(17.6px,4.55vw,19.2px);
    line-height:2;
  }
  html[lang="zh-CN"] .quote p,
  html[lang="zh-CN"] .dark p{
    font-size:clamp(17.2px,4.45vw,19px);
    line-height:2;
    color:rgba(255,255,255,.84);
    overflow-wrap:anywhere;
    line-break:loose;
  }
  html[lang="zh-CN"] .media-caption p{
    font-size:clamp(15.8px,4.05vw,17.6px);
    line-height:1.9;
    color:rgba(255,255,255,.88);
  }
  html[lang="zh-CN"] .metric span,
  html[lang="zh-CN"] .loop span,
  html[lang="zh-CN"] .contact-row span,
  html[lang="zh-CN"] .footer li{
    font-size:clamp(16px,4.15vw,17.8px);
    line-height:1.88;
    color:#526960;
    overflow-wrap:anywhere;
    line-break:loose;
  }
  html[lang="zh-CN"] .list-item,
  html[lang="zh-CN"] .card,
  html[lang="zh-CN"] .product,
  html[lang="zh-CN"] .quote,
  html[lang="zh-CN"] .dark,
  html[lang="zh-CN"] .contact-card,
  html[lang="zh-CN"] .contact-band{
    padding:clamp(24px,6vw,28px);
  }
  html[lang="zh-CN"] .list-item h4,
  html[lang="zh-CN"] .product h4,
  html[lang="zh-CN"] .contact-card h3{
    font-size:clamp(23px,6vw,27px);
    line-height:1.2;
    margin-bottom:12px;
  }
}

/* 中文首页手机端主标题：收一点字号，放松行距，让首屏更稳 */
@media (max-width:640px){
  html[lang="zh-CN"] .hero-copy h1{
    font-size:clamp(32px,8.4vw,43px);
    line-height:1.14;
    letter-spacing:0;
    margin:20px 0 22px;
  }
}