/* =========================================================
   上海亚荣 ak17.com.cn — homepage v3
   Direction: bright showroom — white + cobalt + signal orange
   ========================================================= */
:root{
  --bg:#ffffff;
  --surface:#f2f8f7;
  --surface-2:#e3f0ed;
  --ink:#0b1526;
  --ink-2:#1d2b3a;
  --muted:#64748b;
  --blue:#0a7a70;
  --blue-deep:#05574f;
  --blue-soft:#e2f4f1;
  --orange:#ff5a1f;
  --orange-deep:#e0430c;
  --orange-soft:#fff0e9;
  --navy:#07211f;
  --line:#e3e9f1;
  --line-2:rgba(255,255,255,.16);
  --sans:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  --mono:"SFMono-Regular",Consolas,Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-xl:36px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input{font:inherit;color:inherit}
::selection{background:var(--orange);color:#fff}
:focus-visible{outline:3px solid rgba(255,90,31,.4);outline-offset:2px}
.wrap{max-width:1280px;margin:0 auto;padding:0 32px}

/* shared */
.sec-tag{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--blue);margin-bottom:16px;display:inline-flex;align-items:center;gap:8px}
.sec-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);display:block}
.sec-tag.light{color:rgba(255,255,255,.75)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:56px;margin-bottom:44px}
.sec-head h2{font-size:clamp(30px,3.3vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.01em}
.sec-note{max-width:400px;color:var(--muted);font-size:14px;line-height:1.9;padding-bottom:4px}
.section{padding:102px 0}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:999px;font-size:14px;font-weight:700;transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s}
.btn svg{transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,90,31,.28)}
.btn-orange:hover{background:var(--orange-deep);transform:translateY(-2px)}
.btn-ghost{background:var(--surface);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-white{background:#fff;color:var(--blue-deep)}
.btn-white:hover{background:var(--orange);color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--orange);color:#fff}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--blue);transition:color .25s,gap .25s var(--ease)}
.link-more:hover{color:var(--orange);gap:13px}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* topbar */
.topbar{background:var(--navy);color:rgba(255,255,255,.72);font-size:11.5px;letter-spacing:.04em}
.topbar-in{height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.tb-right{display:flex;align-items:center;gap:18px}
.tb-right a{transition:color .2s}
.tb-right a:hover{color:#fff}
.tb-cta{background:var(--orange);color:#fff;padding:3px 12px;border-radius:999px;font-weight:700}

/* header */
.site-head{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.site-head.scrolled{border-color:var(--line);box-shadow:0 8px 30px rgba(11,21,38,.06)}
.head-in{height:82px;display:flex;align-items:center;gap:36px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-logo{width:200px;height:auto;object-fit:contain}
.head-tools{margin-left:auto}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav>a,.has-sub>a{padding:9px 12px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--ink-2);display:inline-flex;align-items:center;gap:5px;transition:background .2s,color .2s}
.nav>a:hover,.has-sub>a:hover,.nav>a.on{background:var(--blue-soft);color:var(--blue)}
.has-sub{position:relative}
.has-sub>a svg{opacity:.5;margin-top:2px}
.sub{position:absolute;top:calc(100% + 8px);left:0;min-width:240px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:8px;box-shadow:0 24px 50px rgba(11,21,38,.14);opacity:0;visibility:hidden;transform:translateY(6px);transition:.25s var(--ease)}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:none}
.sub a{display:block;padding:10px 13px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--ink-2);transition:.2s}
.sub a:hover{background:var(--orange-soft);color:var(--orange)}
.head-tools{display:flex;align-items:center;gap:12px;flex:none}
.search{display:flex;align-items:center;gap:4px;background:var(--surface);border-radius:999px;padding:8px 14px;transition:box-shadow .2s}
.search:focus-within{box-shadow:0 0 0 3px rgba(10,122,112,.16)}
.search input{width:130px;border:0;outline:0;background:none;font-size:12.5px}
.search input::placeholder{color:var(--muted)}
.search button{background:none;border:0;color:var(--muted);cursor:pointer;display:grid;place-items:center;padding:1px}
.search button:hover{color:var(--blue)}
.burger{display:none;background:none;border:0;width:36px;height:32px;position:relative;cursor:pointer}
.burger span{position:absolute;left:5px;right:5px;height:2px;border-radius:2px;background:var(--ink);transition:.3s var(--ease)}
.burger span:nth-child(1){top:9px}
.burger span:nth-child(2){top:15px}
.burger span:nth-child(3){top:21px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{position:relative;padding:70px 0 0;overflow:hidden}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(10,122,112,.16) 1px,transparent 1px);background-size:22px 22px;mask-image:radial-gradient(ellipse at 78% 30%,#000 5%,transparent 62%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:54px}
.hero-copy{max-width:590px;padding-bottom:20px}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--blue);margin-bottom:20px}
.hero h1{font-size:clamp(44px,5.2vw,72px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.hero h1 span{color:var(--orange);position:relative;white-space:nowrap}
.hero h1 span::after{content:"";position:absolute;left:0;right:0;bottom:3px;height:6px;border-radius:4px;background:var(--orange);opacity:.16}
.lead{max-width:520px;margin-top:24px;color:var(--muted);font-size:15px;line-height:1.95}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:0;margin-top:48px;border-top:1px solid var(--line);max-width:560px}
.hero-stats li{padding:20px 36px 0 0;display:flex;flex-direction:column;gap:2px}
.hero-stats li+li{padding-left:36px;border-left:1px solid var(--line)}
.hero-stats strong{font-size:26px;font-weight:800;letter-spacing:-.01em}
.hero-stats strong em{font-style:normal;font-family:var(--mono);font-size:11px;font-weight:500;color:var(--orange);margin-left:3px}
.hero-stats span{font-size:12px;color:var(--muted)}
.hero-visual{position:relative;width:100%;max-width:560px;justify-self:end;padding:0 0 28px;background:transparent;border-radius:0;box-shadow:none;overflow:visible}
.hero-visual::before{content:"";position:absolute;inset:50px -20px 0;background:radial-gradient(ellipse,rgba(10,122,112,.08),transparent 70%);pointer-events:none}
.hero-collection-head{position:relative;display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;padding:0 2px}
.hero-collection-head>div{display:flex;flex-direction:column;gap:3px}
.hero-collection-head>div>span{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--muted)}
.hero-collection-head strong{font-size:20px;line-height:1.5;color:var(--ink);font-weight:700}
.hero-collection-head>a{font-size:12px;color:var(--blue);display:flex;align-items:center;gap:8px;font-weight:600}
.hero-collection-head>a>span{font-size:19px}
.hero-collection{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.hero-collection .collection-card{position:relative;display:flex;flex-direction:column;min-width:0;padding:17px 18px 14px;border:1px solid rgba(10,122,112,.1);border-radius:22px;box-shadow:0 8px 24px rgba(7,33,31,.025);transition:transform .25s,box-shadow .25s,border-color .25s}
.hero-collection .collection-card:nth-child(even){transform:translateY(26px)}
.hero-collection .collection-card:hover{transform:translateY(-5px);border-color:rgba(10,122,112,.35);box-shadow:0 16px 32px rgba(7,33,31,.1)}
.hero-collection .collection-card:nth-child(even):hover{transform:translateY(21px)}
.collection-teal{background:linear-gradient(150deg,#e5f2ee,#f5faf7)}
.collection-blue{background:linear-gradient(150deg,#edf2f8,#f8fafc)}
.collection-warm{background:linear-gradient(150deg,#f7f0e6,#fdfaf4)}
.collection-sage{background:linear-gradient(150deg,#eaf0e7,#f7faf4)}
.collection-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:10px;letter-spacing:.04em}
.collection-meta>span{font-family:var(--mono);font-size:10px;color:var(--blue);opacity:.7}
.collection-media{height:152px;margin:10px 0 12px;display:flex;align-items:center;justify-content:center}
.collection-media img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .3s}
.collection-card:hover img{transform:scale(1.045)}
.collection-name{display:flex;justify-content:space-between;align-items:center;gap:6px;font-size:15px;font-weight:700;line-height:1.5;color:var(--ink)}
.collection-name i{display:grid;place-items:center;width:28px;height:28px;flex:none;background:#fff;border:1px solid rgba(10,122,112,.1);border-radius:50%;font-style:normal;color:var(--blue);font-size:17px;font-weight:400;transition:color .2s,background .2s}
.collection-card:hover .collection-name i{background:var(--blue);color:#fff}
.hero-tags{position:relative;display:flex;flex-wrap:wrap;gap:10px;padding:30px 0 34px;margin-top:44px;border-top:1px solid var(--line)}
.hero-tags span{font-size:12.5px;font-weight:600;color:var(--ink-2);background:var(--surface);padding:7px 14px;border-radius:999px}

/* cats */
.cats{background:var(--surface)}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cat{position:relative;display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 22px 20px;min-height:148px;transition:background .3s var(--ease),border-color .3s,transform .3s var(--ease),box-shadow .3s}
.cat:hover{background:var(--orange);border-color:var(--orange);transform:translateY(-3px);box-shadow:0 18px 34px rgba(255,90,31,.26)}
.cat-no{font-family:var(--mono);font-size:11px;color:var(--blue);letter-spacing:.1em;transition:color .3s}
.cat-cn{font-size:18px;font-weight:800;letter-spacing:.01em;margin-top:8px;transition:color .3s}
.cat-en{font-family:var(--mono);font-size:9.5px;letter-spacing:.13em;color:var(--muted);transition:color .3s}
.cat-arr{margin-top:auto;font-size:16px;color:var(--blue);transition:color .3s,transform .3s var(--ease)}
.cat:hover .cat-no,.cat:hover .cat-cn,.cat:hover .cat-en,.cat:hover .cat-arr{color:#fff}
.cat:hover .cat-arr{transform:translateX(4px)}
.cat-all{background:var(--blue);border-color:var(--blue)}
.cat-all .cat-no,.cat-all .cat-cn,.cat-all .cat-en,.cat-all .cat-arr{color:#fff}
.cat-all .cat-no{color:rgba(255,255,255,.6)}
.cat-all:hover{background:var(--orange);border-color:var(--orange)}

/* products */
.products{background:var(--bg)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 14px 20px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.prod:hover{transform:translateY(-5px);box-shadow:0 24px 46px rgba(11,21,38,.1);border-color:rgba(255,90,31,.5)}
.prod-img{position:relative;background:var(--surface);border-radius:var(--r-md);height:214px;display:grid;place-items:center;overflow:hidden}
.prod-img img{max-height:194px;width:auto;max-width:92%;object-fit:contain;mix-blend-mode:multiply;transition:transform .4s var(--ease)}
.prod:hover .prod-img img{transform:scale(1.045)}
.badge{position:absolute;top:11px;left:11px;background:var(--orange);color:#fff;font-size:10px;font-weight:700;padding:3px 9px;border-radius:999px}
.prod-info{padding:15px 4px 0}
.model{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--blue)}
.prod-info h3{font-size:16.5px;font-weight:700;margin-top:4px}
.prod-info p{font-size:12px;color:var(--muted);margin-top:2px}

/* flagship */
.flag{position:relative;overflow:hidden;background:linear-gradient(125deg,#05574f 0%,#0a7a70 52%,#14a396 100%);color:#fff;padding:104px 0}
.flag-glow{position:absolute;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(80,210,195,.35),transparent 66%);right:-120px;top:-180px}
.flag-in{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.flag-visual{position:relative;min-height:520px;display:grid;place-items:center}
.flag-word{position:absolute;font-size:104px;font-weight:900;letter-spacing:-.03em;color:rgba(255,255,255,.07);left:0;top:50%;transform:translateY(-50%);white-space:nowrap}
.flag-circle{position:relative;width:470px;max-width:100%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 50% 40%,rgba(255,255,255,.22),rgba(255,255,255,.05) 60%,transparent 72%);border:1px solid rgba(255,255,255,.22);display:grid;place-items:center}
.flag-circle::after{content:"";position:absolute;inset:34px;border-radius:50%;border:1px dashed rgba(255,255,255,.2)}
.flag-circle img{position:relative;width:76%;z-index:1;filter:drop-shadow(0 30px 40px rgba(0,0,0,.35))}
.flag-copy h2{font-size:clamp(38px,3.8vw,54px);line-height:1.16;font-weight:800;letter-spacing:-.01em;margin-bottom:22px}
.flag-lead{color:rgba(255,255,255,.72);font-size:14.5px;line-height:1.95;max-width:470px}
.flag-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:32px 0 32px;max-width:520px}
.flag-specs div{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-md);padding:16px 16px 14px;display:flex;flex-direction:column;gap:4px}
.flag-specs span{font-size:11px;color:rgba(255,255,255,.6)}
.flag-specs strong{font-size:19px;font-weight:800}

/* distiller */
.dist{background:var(--surface)}
.dist-in{display:grid;grid-template-columns:.95fr 1.05fr;gap:72px;align-items:center}
.dist-copy h2{font-size:clamp(32px,3.6vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.01em;margin-bottom:20px}
.dist-points{margin:26px 0 28px;display:flex;flex-direction:column;gap:10px;max-width:480px}
.dist-points li{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;font-size:13.5px;font-weight:600}
.dist-points span{font-family:var(--mono);font-size:10px;color:var(--orange);font-weight:700}
.dist-visual{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.dist-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:10px 10px 14px;box-shadow:0 16px 34px rgba(11,21,38,.07);transition:transform .3s var(--ease)}
.dist-card:hover{transform:translateY(-4px)}
.dist-card:nth-child(2){margin-top:42px}
.dist-card img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--r-md)}
.dist-card figcaption{font-size:11.5px;color:var(--muted);margin-top:10px;padding:0 4px;line-height:1.6}
.dist-card figcaption b{font-family:var(--mono);font-size:10px;color:var(--orange);margin-right:7px;letter-spacing:.06em}

/* process */
.process{background:var(--bg)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.step{position:relative;background:var(--surface);border-radius:var(--r-lg);padding:28px 26px 30px;border:1px solid transparent;transition:border-color .3s,background .3s}
.step:hover{background:#fff;border-color:var(--line)}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;background:var(--orange-soft);color:var(--orange);font-family:var(--mono);font-size:13px;font-weight:700;margin-bottom:28px}
.step h3{font-size:20px;font-weight:800;margin-bottom:8px}
.step p{font-size:13px;line-height:1.9;color:var(--muted);max-width:300px}

/* news */
.news{background:var(--surface)}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.news-col{min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 26px 14px}
.news-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--line)}
.news-head span{font-size:18px;font-weight:800}
.news-head a{font-size:11.5px;color:var(--muted);font-weight:600}
.news-head a:hover{color:var(--orange)}
.news-item{display:flex;align-items:center;gap:14px;padding:14px 2px;border-bottom:1px solid var(--line);transition:padding .25s var(--ease),color .25s}
.news-item:last-child{border-bottom:0}
.news-item time{font-family:var(--mono);font-size:10px;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:4px 9px;flex:none}
.news-item span{font-size:13.5px;font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-item i{font-style:normal;color:var(--muted);opacity:0;transform:translateX(-4px);transition:.25s}
.news-item:hover{color:var(--orange);padding-left:8px}
.news-item:hover i{opacity:1;transform:none;color:var(--orange)}

/* contact */
.contact{position:relative;overflow:hidden;background:var(--orange);padding:94px 0}
.contact::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;border:1px solid rgba(255,255,255,.25);right:-120px;top:-160px}
.contact::after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;border:1px solid rgba(255,255,255,.2);right:-30px;top:-70px}
.contact-in{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.contact-copy .sec-tag{color:rgba(255,255,255,.85)}
.contact-copy .sec-tag::before{background:#fff}
.contact-copy h2{font-size:clamp(38px,4.4vw,58px);line-height:1.14;font-weight:800;letter-spacing:-.01em;margin-bottom:16px}
.contact-copy p{color:rgba(255,255,255,.82);font-size:14px;max-width:420px}
.contact-card{background:var(--navy);border-radius:var(--r-lg);padding:30px;box-shadow:0 30px 60px rgba(90,25,0,.28)}
.cc-label{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:rgba(255,255,255,.45);display:block;margin-bottom:10px}
.cc-phone{display:block;font-size:26px;font-weight:800;letter-spacing:.01em;color:#fff;transition:color .25s}
.cc-phone:hover{color:var(--orange)}
.cc-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:11.5px;color:rgba(255,255,255,.55);margin:14px 0 22px}
.contact-card .btn{width:100%;justify-content:center;background:var(--orange);color:#fff}
.contact-card .btn:hover{background:var(--orange)}

/* footer */
.site-foot{background:var(--navy);color:rgba(255,255,255,.6);padding:60px 0 24px}
.foot-top{display:grid;grid-template-columns:1.4fr .9fr .9fr 1.3fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand .brand{background:#fff;padding:6px 12px;border-radius:12px;width:max-content}

.foot-brand p{font-size:12px;line-height:2;margin-top:18px;color:rgba(255,255,255,.4)}
.foot-col h4{font-size:13px;font-weight:700;color:rgba(255,255,255,.9);margin-bottom:14px}
.foot-col a{display:block;font-size:12px;padding:4px 0;transition:color .2s,transform .2s}
.foot-col a:hover{color:var(--orange);transform:translateX(3px)}
.foot-contact p{font-size:12px;line-height:2.05}
.foot-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;font-family:var(--mono);font-size:9.5px;color:rgba(255,255,255,.3);flex-wrap:wrap}

.foot-contact .foot-mobile{font-size:15px;font-weight:700;color:#fff;padding-top:0;white-space:nowrap}
.foot-wechat{margin-top:15px}
.foot-wechat img{background:#fff;padding:7px;border-radius:8px;width:120px;height:120px;image-rendering:pixelated}
.foot-wechat figcaption{font-size:10px;color:rgba(255,255,255,.55);margin-top:7px}
.foot-links{display:flex;align-items:baseline;gap:22px;padding-top:22px;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-links h4{font-size:12px;font-weight:600;color:rgba(255,255,255,.8);flex:none}
.foot-links>div{display:flex;flex-wrap:wrap;gap:10px 24px}
.foot-links a{font-size:12px;color:rgba(255,255,255,.55);transition:color .2s}
.foot-links a:hover{color:#fff}
/* responsive */
@media (max-width:1120px){
  .nav>a,.has-sub>a{padding:9px 9px;font-size:12.5px}
  .search input{width:100px}
  .hero-visual{max-width:500px}
  .flag-in,.dist-in{gap:48px}
  .cat-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1020px){
  .wrap{padding:0 24px}
  .head-in{height:74px;gap:18px}
  .nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:10px 20px 16px;display:none;box-shadow:0 20px 40px rgba(11,21,38,.1)}
  .nav.open{display:flex}
  .nav>a,.has-sub>a{border-radius:10px;padding:12px 10px;font-size:14px;width:100%}
  .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 6px 16px;display:none}
  .has-sub.open .sub{display:block}
  .burger{display:block}
  .search{display:none}
  .hero{padding-top:44px}
  .hero-in{grid-template-columns:1fr;gap:36px}
  .hero-copy{max-width:640px}
  .hero-visual{max-width:560px;justify-self:center}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .flag-in,.dist-in{grid-template-columns:1fr;gap:44px}
  .flag-visual{min-height:0;padding:10px 0}
  .flag-circle{width:400px}
  .dist-visual{max-width:560px}
  .news-grid{grid-template-columns:1fr}
  .contact-in{grid-template-columns:1fr;gap:36px}
  .foot-top{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
  .foot-contact{grid-column:1/-1}
}
@media (max-width:720px){
  .wrap{padding:0 18px}
  .topbar-in{height:34px}
  .topbar-in>span:first-child{display:none}
  .tb-right{margin-left:auto}
  .brand-logo{width:174px}
  .section{padding:72px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .sec-head h2{font-size:28px}
  .sec-note{max-width:none;font-size:13px}
  .hero h1{font-size:38px}
  .lead{font-size:13.5px;margin-top:18px}
  .hero-actions{margin-top:26px}
  .hero-stats{margin-top:34px;flex-wrap:wrap}
  .hero-stats li{padding:16px 22px 0 0}
  .hero-stats li+li{padding-left:22px}
  .hero-stats strong{font-size:20px}
  .hero-visual{padding:0 0 18px;max-width:460px;border-radius:0}
  .hero-collection{gap:12px}
  .hero-collection .collection-card{padding:13px 12px 12px;border-radius:17px}
  .hero-collection .collection-card:nth-child(even){transform:translateY(16px)}
  .hero-collection .collection-card:nth-child(even):hover{transform:translateY(11px)}
  .collection-media{height:120px;margin:9px 0}
  .collection-name{font-size:12px}
  .collection-name i{width:24px;height:24px;font-size:15px}
  .collection-meta{font-size:9px;gap:6px}
  .foot-links{gap:14px;align-items:flex-start}
  .hero-tags{padding:22px 0 26px;margin-top:30px}
  .hero-tags span{font-size:11px;padding:6px 11px}
  .cat-grid{gap:10px}
  .cat{padding:16px;min-height:126px}
  .cat-cn{font-size:15.5px}
  .cat-en{font-size:8px}
  .prod-grid{gap:10px}
  .prod{padding:9px 9px 14px;border-radius:16px}
  .prod-img{height:148px;border-radius:12px}
  .prod-img img{max-height:134px}
  .prod-info{padding:11px 3px 0}
  .prod-info h3{font-size:14px}
  .prod-info p{font-size:10.5px}
  .model{font-size:9px}
  .badge{font-size:9px;padding:2px 7px;top:8px;left:8px}
  .flag{padding:70px 0}
  .flag-copy h2{font-size:33px}
  .flag-circle{width:330px}
  .flag-specs{gap:8px}
  .flag-specs div{padding:12px 11px}
  .flag-specs strong{font-size:15px}
  .flag-specs span{font-size:10px}
  .dist-visual{gap:10px}
  .dist-card:nth-child(2){margin-top:26px}
  .dist-card figcaption{font-size:10px}
  .steps{grid-template-columns:1fr;gap:12px}
  .step{padding:22px}
  .step-no{margin-bottom:16px}
  .news-col{padding:20px 18px 8px}
  .news-item span{font-size:12.5px}
  .contact{padding:68px 0}
  .contact-copy h2{font-size:36px}
  .contact-card{padding:22px}
  .cc-phone{font-size:22px}
  .foot-top{grid-template-columns:1fr 1fr;gap:28px 20px}
  .foot-brand{grid-column:1/-1}
  .foot-contact{grid-column:1/-1}
  .foot-bottom{flex-direction:column;gap:5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}